My 40-day journey into meditation with Muse (the brain-sensing headband)
Introduction — About this article
What started out to be an exercise in self-improvement quickly became an obsession I lost myself in. Documenting my meditation sessions, then chatting with friends — one thing led to another and at one point I found myself with a 7,000 word article. Alas, I’m super excited to finally launch and share with you my journey into meditation using Muse — the brain sensing headband. Included are highlights of noteworthy sessions, a ton of nerdy data, and a little research I’ve gathered.
A highlights you can look forward to:
- Meditation session while medicated on cannabis
- An emotional breakdown
- Discovering how theta-wave rhythms prompt epiphanies
- The time I almost orgasmed while meditating. I’m not shitting you.
In attempts to make things simple, I’ve broken the article into six sections. You can easily click around and navigate from one to another at your pleasure.
Thanks for reading.
Disclosure: While I’ve done my best to take a processed approach, I am not a scientist, doctor, or guru. I encourage you to do your homework, and feel free to call me out on anything I may have missed or got wrong. This include grammar and speling mestakes!
01. Muse, and the brain
“Muse [by Interaxon] is the first tool in the world that can give you accurate, real-time feedback on what’s happening in your brain when you meditate. It provides motivational challenges and rewards to encourage you to build a regular practice.”
- 7 sensors to read delta, theta, alpha, beta and gamma waves
- Wraps comfortably around the forehead and above the ears
- Super simple to use. Turn it on, connect device to app via bluetooth, put on the headband, and begin.
- Headphones/earbuds optional but highly recommended.
- Pre-session questions ensure device is properly calibrated
- During session, app delivers real-time feedback via audio
- Brain activity is recorded and displayed in app, via line-graph format
The Muse app (for both iOS and Android) visualizes your brain activity, specifically how calm or active your mind is. Gamification (challenges, badges, and awards) keeps you coming back.
Real-time audio feedback
The app delivers audio feedback based on brain activity. When very calm, ambience noise is silenced while birds are heard chirping and landing within vicinity. Depending on brain activity, sounds of light rain to heavy rain and thunder can be heard — no birds chirping.
You have the option to choose between two settings: rain in a forest, or winds by an ocean shore.
Research and usage
Over 75 different research institutions are currently using Muse. More info from InteraXon to be provided…
Brain science primer
“Studies have shown 10 one-hour sessions with a neurofeedback based EEG system can be as effective as Ritalin in terms of treating ADD, with those effects persisting for six months. With a headband like the Muse, it’s totally possible to deliver a drug-free treatment for ADD. That’s the kind of thing that we’re really excited about looking at and working in as we go forward,”
– Trevor Coleman, Muse co-founder
A few definitions
- Electroencephalography (EEG) is typically a non-invasive (however invasive electrodes are often used in specific applications) method to record electrical activity of the brain along the scalp. EEG measures voltage fluctuations resulting from ionic currents within the neurons of the brain.
- EEG Biofeedback is a learning strategy that enables persons to alter their brain waves. When information about a person’s own brain wave characteristics is made available to him, he can learn to change them. You can think of it as exercise for the brain.
- NFT, also known as Neurofeedback-therapy, aka EEG Biofeedback, offers an additional treatment option for people with eating disorders, addictions, mood disorders, anxiety and attention deficit disorder.
- 46AD: Scribonius Largus uses two electric eels caught from the Mediterranean Sea against Emperor Claudius’ head to relieve savage migraines. This is the first recorded instance of electrical stimulation being used as a medical treatment.
- 1798: Sir Alexander Crichton discusses hyperactivity and mental restlessness in his book “An inquiry into the nature and origin of mental derangement”.
- 1902: George Still describes ADHD for the first time.
- 1924: German psychiatrist Hans Berger connects electrodes (small round discs of metal) to a patient’s scalp and detects current by using a ballistic galvanometer (a medical device, not a Transformer).
- 1932: G Ditch becomes the first researcher into QEEG (Quantitative EEG).
- 1968: Joe Kamiya popularizes neurofeedback in an article for Psychology Today about alpha brain wave experiments.
- 1970: Doctor Robert White performs the first head transplant from one monkey to another.
- 1977: More public awareness on the subject thanks to books like Stress and the Art of Biofeedback, written by Barbara Brown, Research Psychologist.
- 80–90s: Neurofeedback is being applied to a wide variety of psychological and central nervous system based conditions, including ADD/ADHD.
- Neurofeedback is used for peak performance by professional sports teams, Olympic athletes, and business people. It is commonly used as a non-drug solution for ADHD, post traumatic stress, and emotional conditions of all sorts.
- Neuromarketing emerges, aimed at making better marketing decisions based on neuroscience.
- Neuroethics is becoming increasingly important in the field of brain science.
- Consumers can now buy DIY kits that electrically stimulate the brain to help with depression, anxiety, and a host of other mental ailments
- Similar to Star Trek’s Borg, scientists connect three monkey brains together to create a ‘brain-net’. The brain-net is able to solve complex problems that the monkeys cannot solve individually.
- Doctors like Adam Gazzaley and Jane McGonigal research and create brain games to assist in a variety of areas from strengthening cognition to overcoming trauma.
02. Observations and insights
Correlation vs Causation
Do peak performers eventually find meditation and attempt to reap its rewards? Or does meditation help achieve peak performance? Between the anecdotal testimonies of peak performers like Arnold Schwarzenegger and Richard Branson in combination with scientific research, the benefits of meditation is solid.
More than just spirituality
For some, meditation is a way to connect to the universe, or perhaps a higher Being. More recently the scientific community has acknowledged that there’s more to the practice than connecting with God.
“There is nothing spooky or irrational about mindfulness, and the literature on its psychological benefits is now substantial.”
– Sam Harris, Neuroscientist, Philosopher
- Increases mindfulness while decreasing the default mode network (DMN), the brain network responsible for mind-wandering and self-referential thoughts
- Improves concentration and attention
- Helps relieve depression and anxiety
- Helps break addictions
- Helps preserve the aging brain
- May even lead to volume changes in key areas of the brain
The practice of meditation has been around as early as 2600 BC. “Some authors have even suggested the hypothesis that the emergence of the capacity for focused attention, an element of many methods of meditation, may have contributed to the final phases of human biological evolution.”Woah.
“Upgrade your grey matter,
Cause one day it may matter.”
– Dan the Automator
- Alcohol in small amounts is not as bad as I thought, no real impact on my Muse Calm Score (CS)
- Lack of sleep, hunger, and pre-meditation emotions impact CS
- Cannabis leads to lower CS the next day
- Random memories forgotten seem to surface without purpose
- Session is over fast when calm, seems to never end when distressed (more on this later)
- Spikes of brain activity is produced by epiphanies and REM (more on this later)
- Epiphanies and answers to tough questions surface out of nowhere
- Self-awareness and awareness of environment and others heightened throughout the day
- Better decisions throughout the day
- Increased peacefulness, and general happiness throughout the day
Referring to the audio feedback from the app, my partner Lannie asked,“How does the feedback loop affect your meditations?” My thoughts below:
- Life is a feedback loop. We’re often aware that we are being observed. It’s important to accept that we cannot avoid neither the noise of life and observation (judgement) from others.
- I like the feedback. It notifies me when I stray.
- At first I was affected by the audio, and thus a feedback-loop was experienced. Eventually, I got much better at not letting the feedback affect me, sometimes forgetting it’s there.
- The science of observation: Only once observed, does matter change its behaviour from waves to particles. If matter changes on the atomic level — you better believe we do too. Check out wave particle duality or the double-split experiment. (video)
Two types of calm
The Muse app only differentiates between three levels of brain activity: calm, neutral, and active. However, the line-graphs can tell a very different story. There’s ‘calm’ and then there is ‘holy fuck I’m in Nirvana calm’ .
Brain activity can fluctuate quite a bit, even within the calm band, sometimes coming close to or slightly into neutral. Typically, this is the case. Nirvana-calm is when brain activity is extremely close or touching the zero-line, and remains there for seconds to minutes at a time. Such an example of this can be found under ‘Noteworthy sessions // Absolute bliss’.
Early morning meditation sessions between 4 and 5am became my favourite. It fact, they accounts for 48% of my sessions. This is when I experience the most peace, silence, and stillness.
My morning routine:
- Wake up at 4am
- Drink half to a full cup of Bulletproof Coffee (BPC)
- Begin meditation sessions
Learn more about my daily routines.
Awake and alert vs fatigued and exhausted
Surprisingly, being awake and alert yields higher CS. While alert, I am able to easily bring my attention back to breathing. This is more evident during my early morning routines after drinking a cup of BPC.
One would think being tired results in less brain activity; I’ve experienced the opposite. Fatigue and exhaustion always results in low CS. Exhaustion creates an alarming amount of head-noise which is very difficult to overcome. Imagine a dozen broken records playing the same time. Exhaustion reminds me of a computer left on for too long, running unnecessary processes in the background, burning itself out. Similar to a computer, the brain needs to shut down and cool off.
There is a temporary solution to exhaustion: stretching and yoga.
Stretching and light yoga
After a few minutes of stretching, yoga, focused breathing, and a bit of kung fu to channel my energies, my CS generally improves, sometimes dramatically. I’ve also noticed my posture naturally improves, allowing for better breathing.
Brain scans of yoga practitioners reveal that yoga produces a decrease in anxiety and a boost in a brain chemical that enhances our mood.
“Yogic practices can be used as psychophysiologic stimuli to increase endogenous secretion of melatonin, which, in turn, might be responsible for improved sense of well-being.” 
– Journal of Alternative and Complementary Medicine
Mindset and intention
Similar to physical preparation, mental preparation is important before meditation as well. Some call this mental preparation ‘setting intentions’.
- Fluster and frustration: Typically from too much going on, the noise seems impossible to silence resulting in lower CS.
- Anticipation and retrospection: The anticipation of a future event will create an active mind. Similarly, retrospection creates mental noise. A quote comes to mind:
“If you are depressed you are living in the past. If you are anxious you are living in the future. If you are at peace you are living in the present”
– Lao Tzu
- Desire for “high-score”: Typically a noisy session, the desire to achieve a high CS results in the opposite.
- Anger: Interestingly, anger is not nearly as bad as being annoyed, sad, or exhausted. My hypothesis is that anger turns off my ‘thinking brain’ allowing me to more easily tune out thoughts. Also, the high energy makes me alert, able to better observe my breathing. Thanks Ben Morgan for the additional thought on this (under responses).
- For the pleasure: Highest CS is achieved when I genuinely want to meditate, and not for any other ulterior motive.
“If you meditate for an ulterior motive, that is to say, to improve your mind, to improve your character, to be more efficient in life, you’ve got your eye on the future and you are not meditating. Because the future, is a concept. It doesn’t exist.”
– Alan Watts (1915–1973)
Observing vs committing
Through meditation I have witnessed the crazy amount of random and unprovoked thoughts that enter my mind throughout the day. Attempting to suppress them only strengthens them. The key is to observe and let the thoughts pass. In my best meditation sessions, I am able to observe without judgement, interference, or commitment.
“Whatever you fight, you strengthen, and what you resist, persists.”
– Eckhart Tolle
Do vs try
When I try to meditate, or focus on my breathing, my brain activity is high, and my CS low. There is a mysterious area between wanting and doing — difficult to describe — that produces great results. By not trying to focus on my breathing, but rather, becoming one with my breath, I am able to experience more peace. When I am able to do this, nothing else exists. Not I, not my surroundings, just my breath.
Only a few times did I experience this extraordinary feeling.
Attention vs interest
The attempt to ‘pay attention’ or ‘focus’ can actually increase brain activity. By simply changing the word ‘attention’ to ‘interest’ makes a huge difference. The continued mantra of being ‘interested’ allows me to enjoy, indulge, and lose myself to the serene and beautiful rhythms of breathing.
“Interest creates flow, flow prompts feeling of joy. It’s easy to be interested, while difficult (and goal oriented) to pay attention or to ‘focus’.”
Unlike attention and focus, interest is pleasurable and without a future objective. I believe this was key.
This idea may be a bit strange, but it works. Language allows one to describe, label, and provide commentary. Disconnecting from language allows me to observe and be aware of my thoughts without being consumed by them.
This is an idea I came up with that seems to work for me, but I have not found any literature on this subject in my research.
Time is an illusion
We’ve all experienced the intangible inconsistency of time. This feeling is amplified during meditation. During my most blissful sessions, time seems to stand still, and paradoxically the session is over in mere moments. The opposite is true when my mind is flustered, frustrated, and noisy. Time seems to move fast at a thousand thoughts per minute, while the session just never seems to end.
“Time isn’t precious at all, because it is an illusion. What you perceive as precious is not time but the one point that is out of time: the Now. That is precious indeed. The more you are focused on time — past and future — the more you miss the Now, the most precious thing there is.”
– Eckhart Tolle, The Power of Now
Anger, and the 24-hour rule
I’ve been collecting data on my emotions and moods for quite some time — even before starting my meditation practice. One of my goals for 2015 was to dramatically reduce the amount of times I experience anger. (I’m a passionate person.)
The raw data that I collected through the Muse headband has helped me see how anger affects my brain, even days after. This has prompted a new life-hack practice in which I (do my best to) give no power to my anger. I don’t deny it, but I don’t take it seriously. I find that postponing my thoughts on the subject for 12–24 hours almost always gives me a new perspective. A better perspective. The initial feeling of anger simply evaporates without effort.
Suffice to say,
Meditation has helped me better protect myself from mental noise and chatter. Increased self awareness has brought a much needed perspective and has enhanced strategic decision making tenfold. I can better see the cascading effects of each thought, and decision. My creativity has skyrocketed. My ideas are better, and they come more frequently. My mental output and stamina have also increased. Not to mention, my confidence is stronger, and more stable . I’m less prone to breaking from an unforeseen obstacle or failure.
03. Noteworthy sessions
You can bet that ninety-nine 12-minute sessions yielded some very interesting data for this noobie. Below are my favourite sessions. Some great, some horrible.
71 // 2015–05–29 Fri 2314hrs 78%
71 // = session number
2015–06–23 = date
Tue = day of week
0457 hrs = time of day
95% = calm score
Spikes: Epiphanies, ideas, and hyper-sexual feelings
What an epiphany looks like
On Thursday, May 24th, I was consumed by a business challenge. I avoided thinking about it all weekend with no success. Anxiously, thoughts kept popping up in my brain like a broken record — until I turned to meditation. “Scientists have noted that these slower (theta) brain wave patterns are accompanied by deep tranquility, [and] flashes of creative insight.” See the huge spike  10 minutes in? Voila! That was an epiphany to my big challenge I tried so hard not to think about.
Waves of ideas
Have you ever surfed the waves of the Northern Pacific Ocean off the coast of Honolulu? Neither have I, but I doubt it’s as amazing as this session. Check out the spikes representing waves of ideas.
Lucid sex dreams
A pretty good session considering I was falling asleep. You can see spikes caused by hallucination/REM. At one point my mind decided to get kinky in thought. Over three minutes I couldn’t shake off the visuals from my mind. #GoodTimes
 = REM,  = erotic dreams
Sex on my mind, part 2
This was one of my most enjoyable sessions, only to be interrupted by sexual thoughts . Clearly, the desire to copulate was lurking in the deep recesses of my mind. Horizontal red bands represent moments of bliss.
Partying, before and after
A night of partying hard negatively affects my brain the next day. Interestingly, my mind is also pretty noisy before an event. The mere anticipation of partying gets me stirred-up and wild.
Golden State vs Cavaliers
About to Party
Excited to go out, my mind is anticipating some good times.
Awake for 24 hours
Can’t find calm when you’ve partied so hard the night before…
Hungry, tired, sleepy, exhausted, and doing it for all the wrong reasons. The following three sessions were amongst my most dreaded sessions. While 60% (07) and 71% (89) are not my lowest, these sessions felt like torture.
Wanted to achieve greatness, but afraid to let go.
Starving and exhausted
Pushed myself too hard. Could hardly get through this session.
More on this below in “Day 38: The worst and best day”
Upset the night before
They say going to sleep upset or distressed is something you should avoid — and for the most part, I do. That being said, the following two sessions represent the morning after an upsetting evening. Quite low compared to my early morning average of 87.5%. Moral: Don’t go to bed upset.
While I stayed calm during the actual conflict (the night prior), it clearly affected me more than I originally had thought.
Upset with the wifey
Why do I ever challenge the wisdom of “Happy wife, happy life”? Because I’m a man, and I’m always wrong.
Day 38: The worst and best day
Anxiety and defeat
Started a bit rough, only to get worse. Below are my notes from that day, session 89.
“At this point — I am completely defeated. I can’t seem to get a grip. I can’t seem to calm my nerves, quiet my mind, and relax myself. At the end of this session, I find myself wallowing in misery. My head in my hands, wondering, ‘what just happened?’. I was so confident. I thought I had mastered my mind. Now I’m just scared. Scared shitless that I’ll never master my mind, and that this is the beginning of it getting worse.
Thoughts of work. Inadequacies as a father. You name it — I was thinking it. My mind spiraling out of control. The irony. Just last night I was studying body language, and how it affects our hormonal state, and thus, our mind.”
I went to bed upset. I awoke with the pain bodies still remaining from the night prior. For a moment, everything that I had learned up to this point about meditation and my mind, seemed to have vanished. I felt lost, and just a few days before the end of my 40-day journey. I thought to myself,“What am I going to write about now?”
I knew that my anguish was all in my head, literally. Remembering how one’s physiology affects the mind, I went for a walk, followed by stretching and yoga in the park, and a decision not to care. I thought to myself, “If I meditate, it’s for me, and not because I’m writing an article. Just, plain ol’ beautiful me.” Arriving back home, I did one more session.
Leading up to orgasm
Later that evening…
First session yielded 67%. Totally okay with that. Second session: 92% of bliss. Don’t know if it was a coincidence, or linked to my morning breakdown, but session 92 was orgasmic.
A description of this session is below in “Absolute bliss // 2nd place: Orgasmic day 38”.
Honourable mention: I Did it for me
80 // 2015–06–26 Fri 0459hrs 96%
This session is amongst my greatest. I didn’t care about the score, or this article. Pure and selfish — simply for the sake of meditation. I wanted to lose myself in my breathing, and I did. It was wonderful. I was in flow.
 Random thought about websites updates,  Drifted off thinking about time and space.
3rd Place: 11.9 minutes of absolute bliss
32 // 2015–06–09 Tue 0424hrs 99%
This was an absolute amazing session. But how I achieved 99% calm — I have no idea. I have yet to achieve such a blissful state.
2nd place: Orgasmic day 38
92 // 2015–06–29 2032hrs Mon 91%
This session was by far the weirdest. Unlike every session before and after, my breathing did not become softer and slower, but the opposite. Every breath seemed to get deeper and faster. At one point, I was taking in way more oxygen than I was exhaling co2. My chest expanded upwards, and my posture with it. I was in a rhythmic state, unable to slow myself down.
The best way I can describe the experience is that it was similar to the wonderful orgasmic feelings of controlled and long-lasting sex, right before the finale.
1st Place: Cannabis infused
05 // 2015–05–26 2302hrs Tue 91%
Between point  and point , my mind was experiencing thousands of thoughts entering and existing, without judgement or attachment. It was truly an out of body experience. I was the observer, but not the thinker.
The upwards curve  you see (6–9 mins) is my mind hallucinating; having an out-of-body experience. Basically, I’m falling into lucid dreaming. At the highest point of brain activity, I was in full REM. Quickly realizing it — thanks to the audio feedback (heavy rainfall) — I was able to bring my attention back to breathing. In the last two minutes , I was able to control myself going in and out of REM. A very odd and spiritual experience.
Considering this was only day 4, I set myself up for failure for the next week. For a brief moment in time, my ego thought I had mastered meditation! I thought I ‘figured it out’. And while, this session is dear to me, it was the cause of performance anxiety for days to come. Despite my efforts, I have yet to recreate an experience so blissful
I will forever chase this meditation dragon.
04. The data
Unfortunately — Medium does not allow for tables, iFrames, and advanced formatting.
Below are images, but if you’d like to see the raw data, go here: THE DATA
I’ve collected quite a bit of data, including session time, day, and what I did the night before. I documented this data in two places: an Adobe Illustrator file with notes accompanying each graph, as well as a Google Spreadsheet capturing all the statistical data. Below is the data from my Google Doc.
“LS” only takes the last session of a meditation event into account. More on this below.
Last sessions — days of the week
05. Approach and process
I started meditating to increase the quality of life. Documenting and measuring myself is something I enjoy, and do a lot of. The idea of writing an article came after many friends showed interest in learning more about my journey into meditation using Muse.
At first, I thought thirty days was adequate time to provide enough data to yield insight. I later extended this to 40 days. The additional ten days turned out to be a great decision as I had some very interesting experiences in the last ten days. You can read about it in Noteworthy Sessions.
Calm score (CS)
A CS is a score the app gives you. The higher the CS, the better you were able to focus on your breath and not be consumed by your mind’s chatter.
A meditation event is one or more consecutive sessions.
All sessions (AS) vs Last sessions (LS)
AS refers to data from all sessions, while LS only takes the last session of a meditation event into account.
I believe LS is a more accurate representation of my mind-state, which is the end of a meditation event. I consider previous sessions as warm ups. Of course, AS data is included.
Constants vs variable
There were factors that I felt were important to keep constant, while some I allowed to vary. Below is a list:
• At least one session per day
• 12-minutes sessions
• Sessions in a quiet place
• Technology: Device: iPhone 5, Volume level: 50%, Audio option: Rain in Forest, Headphones: Sony ear buds
Positions, places and attire
The majority of my meditation events were in my office, sitting on an office chair, feet up on another chair. I later decided to keep my feet flat on the ground as a standard, considering I won’t always have the opportunity to put them up.
Some meditation events were in bed, typically evening and midday sessions (I often work from home), a few in my minivan, a couple in my son’s bedroom, and one on the balcony. I’d typically wear simple and loose clothing, like loose jeans and a hoodie or pajama pants and a T.
Diet, exercise, sleep, and partying
- I typically ate a slow-carb diet.
- Aside from light stretching, I stopped exercising or going to the gym. I’m in the middle of a weird body experiment. A whole post is needed to explain this decision.
- Because I was waking up quite early (4am), I’d usually take one to two naps throughout the day. Naps were typically between 15 to 60 minutes, depending on how many hours I slept the night prior.
- I drank occasionally and medicated using cannabis a few times. I didn’t stop partying, just partied less. I believe regular meditation suppressed my desire to party as I became more interested in other creative pursuits.
I did a few meditation sessions prior to starting my 40 day journey. I went through ten 10-minute guided meditation sessions using the Headspace app. I also clocked in several sessions using Muse. Those sessions are:
2015–05–16 0922hrs Sat 82% 03 mins
2015–05–17 1157hrs Sun 54% 03 mins
2015–05–19 0922hrs Tue 87% 05 mins
2015–05–20 0638hrs Wed 79% 05 mins
2015–05–21 0707hrs Thu 65% 07 mins
- Screen-captured the line-graph using iPhone’s built-in screen capture.
- Ported over the image(s) onto my MacBook Pro.
- Placed images in Adobe Illustrator (each session in it’s own layer).
- Within Illustrator, made reference points, lines, and notes.
- Any points of the brain scan I felt were worthy would be highlighted.
- Added data from each session to Google Spreadsheet. Data included:
• Calm, neutral and active states
• Date and time
• Day number, session number
My first proper introduction to the benefits meditation and prayer was in 2003 when I found a stack of National Geographic magazines. It’s at this point I learned that meditation strengthens the prefrontal cortex; the area of the brain that regulates feelings of peace and happiness. Suffice to say, I’ve known of the benefits of meditation for years, but never really started.
Fast forward more than a decade, I’ve been meditating daily for the last 90 days, clocking in over 38 hours. I can’t imagine my life without it. I only wish I started sooner. A quote comes to mind:
“To know and not to do is really not to know.”
– Stephen R Covey
“What would you change about your past?”
Asked a member of the audience. After a long pause, he replied “Starting meditation sooner”. Hearing how he started and stopped but never really committed, was an experience I could relate to. Hearing how much it made him super-human, was something I could not. It was at this point that I said to myself, ‘enough is enough; no more excuses,’ and made the decision to take meditation seriously.
Later that evening I was surprised to find that I won a Muse headband. The universe works in mysterious ways.
Meditation + Technology = Game changer
Whether you consider yourself a high-achiever, an elite performer, or perhaps someone struggling with adversity and trying to find happiness — regular meditation should be part of your formula for success. Simply, meditation is good for your brain.
“you can’t manage what you don’t measure.”
At no other time in history has brain (and other areas of our mind and body) sensing technology been accessible and affordable to the consumer. If you want to make leaps and bounds in your life: upgrade your brain by meditating. And it starts with measuring it.
What started out as a simple data capturing experiment turned out to be a rather big mountain. I couldn’t have done it without the help of a bunch of people, included but not limited to my awesome wife and partner Lannie Le, Alkarim Nasser, Sami Sadaghiani, Sarah Eskandarpour, Richard Lazazzera, the peeps at InteraXon. And of course, Tim Ferriss.
Originally published at Kal.ceo on July 1, 2015.