So @marckohlbrugge gave me an idea Check how all your food and health things affect your productivity I log most of my work (and many other things) religiously on his site so it's easy to pull it from that Good for my productivity: 🧑‍🏫 gym with PT +20% 🧈 low fat food % +16% ☀️ tan +16% 🏋️ gym +13% 🥵 high strain +13% 🍚 high carbs % +12% 🔥 low calories +10% 🥩 high protein % +9% ❄️ cool bedroom +8% 🌡️ warm bedroom +7% 💧 humid bedroom +6% 🧘 low strain +1% 😴 good sleep +1% 🧖 sauna +1% Bad for my productivity: 🍺 alcohol −28% ✈️ travel long-haul −26% 🤒 sick −25% 🧈 high fat food % −24% 💆 massage −23% 🥩 low protein % −20% 🛩️ travel short-haul −18% 🔥 high calories −14% 🍚 low carbs % −12% 💻 coworking −7% 🏋️ gym solo −7% 🥱 bad sleep −6% 🛁 bath −4% 🥋 martial arts −2% 🌵 dry bedroom −2% Most interesting for me is that days where I go to gym and have heavy strain are actually the days I am most productive (🧑‍🏫 gym with PT +20%). Even with 1 hour spent in the gym and another 30 mins showering after etc. Then if you look at the worst for productivity: imagine having a life flying around all the time (✈️ travel long-haul −26%), drinking alcohol (🍺 alcohol −28%), overeating (🔥 high calories −14%) low protein (🥩 low protein % −20%) fat food (🧈 high fat food % −24%) Also interesting coworking (💻 coworking −7%) with other people destroys my productivity (kinda obvious though but worth it for social) Note: most of these are not significant so they're more directional hypotheses to test more and require more data (which I collect every day of course) See correlations at