I’d definitely avoid going cold-Turkey on sitting. When I built my standing desk I had to ease my way into it gently. It was adjustable so I could spend a few hours standing and then (usually later in the day) drop it down and give my legs a rest. Over time I sat less, stood more and felt more energised. I must admit it was more enjoyable in Summer than in Winter – sometimes you just want to sit down and hack away in the warmth of a cosy chair – but I’d still recommend people give it a try.