5 day fasting experiment results

Before and after ‘health’ metrics

  • 74–75 kg | 64–65 kg
  • 17–18 % | 29–31% body fat
  • 77–78 % | 64.7–66.6 % muscle mass
  • 60–70 | 75–80 resting BPM
  • 6.0–6.6 | 6.1–6.4 m/s PWV
  • 71–72 kg | 62.5–63 kg
  • 16–17 % | 28–29 % body fat
  • 78–79 % | 66.5–66.8 % muscle mass
  • 70–75 | 70–75 resting BPM
  • 6.3–6.5 | 5.8–6.0 m/s PWV

Lessons learned

  • Besides the health benefits, the other big benefit we got from this fast was how it changed our ‘relationship’ to food. Once we started re-feeding, we became much more aware of what we were eating and appreciated the good food we consumed. I also find that we are more reluctant to eat ‘junk’ food, since we’d been through this rather difficult fast.
  • For both of us, it seems that our coffee consumption has also reduced since fasting. This could be due to consuming less coffee than normal during the fast, reducing our body’s reliance on caffeine.
  • Although it was a 5 day fast, the entire process is a lot longer. Re-feeding and restoring our physical stamina (e.g. walking up stairs) took a few days. Restoring gym strength and endurance is still on-going after 2 weeks of re-feeding.
  • Our mental stamina and focus restored quite quickly shortly after our first meal.
  • Having a partner to do it with helped a lot. We could motivate and keep watch over each other, and also share/compare what we were feeling during the fast.
  • We were mainly hungry between 3pm-7pm. This is pretty close to our normal feeding time during ‘intermittent fasting’, which is interesting as our bodies seem to be used to the intermittent schedule.

Day by day breakdown

Day 1

Day 2

Day 3

Day 4

Day 5

Breaking the fast

References

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david.truong.vc.

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David Truong

David Truong

david.truong.vc.

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