As I tuck in to a brunch of Viana smoked tofu (the tastiest straight-from-the-packet tofu -- best bet if you want tofu but don't have a really good and dedicated veggie cook handy) and mixed beansprouts, first food after an 18-hour fast, fresh from my afternoon nap (brief today, because I was hungry and had just unpacked a load of food from Suma, and probably dreaming of trying the Montezuma's spicy dark chocolate I just put in the cupboard), pondering when I need more caffeine (last cup of coffee, midday-ish; topped up caffeine levels with green tea an hour or so back, but coffee has a 3.5h half-life so I may need actual coffee soon, and there was some in that delivery)... I thought I'd just mention the current state of my bodyhacks:
Churchill-style biphasic sleep is absolutely sustainable, and I'm feeling better on it than any other style of sleep. Sleep 5-6 hours a night, plus a nap of up to 2 hours in the afternoon, *every* afternoon; but don't use alarm clocks. Advantages: (1) Less sleep needed than other methods, so productivity increases. (2) No afternoon slump in awareness and concentration due to tiredness; when it starts to hit, I just go for my nap. (3) Adaptable -- if I do a lot of working out, I end up with close to 8h a night, total, but when not working out so much, it's more like 6, with no particular adaptation period required (thanks largely to the "no alarm clock" thing). (4) Suits my body clock, which in sleep research terms is owl-like, i.e. I like to stay up late at night. (5) Also suits the ability to interact with others at normal human hours, as I wake up early too (typically sleeping from around 2am to 7am, +/- 1 hour on each time). (5) If I do a late morning or early afternoon workout, I can get some sleep soon after, letting my body repair itself very soon after working out, leading to much-reduced Delayed Onset Muscle Soreness. There are 2 slight disadvantages so far: (1) I really need that afternoon nap, now, and very much notice if I don't get it, because I actually feel tired again for the first time in weeks. (2) Haven't precisely settled into a food routine that maps on to the sleep routine, yet, but sticking with Zone diet principles works fine with it overall.
Food -- still sticking pretty well to the Zone diet, around 3 years since starting it. I eat a fair bit more healthy fat (olives, nuts, etc.) than the weight-loss version of the Zone, so closer to Athlete Zone than anything else, moving towards a more strict Zone diet for a few weeks if I start to notice my stomach getting rounder than I want it to be. This is the case right now, largely due to that enforced time off exercise due to back/neck probs a month or so back. No worries -- will be suitably buff again by Odyssey. Still aiming for a high dose of dietary Omega-3, and a relatively low intake of Omega-6, for brain and heart health. (I know some of you Goldacre fans will scoff, but I think you and he are both wrong.)
Fasting -- still intermittently fasting (maybe about once every 10 days, for 14-20 hours). This is for long-term health reasons -- there's some evidence that intermittent fasting has some of the same life-extension benefits as longer-term calorific restriction, so I'll stick with it.
Drink -- caffeine is most effective when topped up hourly in small doses, but does fade gradually. I avoid high doses of it in the evenings, but otherwise it's coffee first thing, green tea with gingko an hour or so later, white tea with pomegranate an hour later, more coffee, green tea with mixed antioxidant berries & leaves, more white tea, more coffee... seems to work pretty well, for a fairly constant low-level potentiation of ionotropic responses and stimulation of the central vagus, you know. ;) And, yes, I'm sufficiently convinced of the probable health benefits, and lack of risk, of around 4-5 cups of green and white tea per day, to think 'em worthwhile. If nothing else, they're a great low-dose caffeine top-up.
Chairs -- avoiding them pretty well! I've moved my standard laptop position from sofa to spare bed, on the mezzanine, which is lovely and light, too. Once the lappy is fully charged, I take it downstairs and work standing, at a high table, till it runs out of charge. If I'm waiting for a web page to load or bit of software to fire up, I do a few squats in front of the screen.
Exercise -- dammit, 2 bank hols in a row meant no judo... I am well enough now that I could and should be working out again, but desperately short of time. :( Trying to squeeze in short, intense workouts, anyway.