What's weird is psychoactive substance rarely seem to change this productivity dynamic. Even if I'm well rested and drink coffee in the morning, I'm still inclined to procrastinate, whereas in the evening even after drinking alcohol or smoking weed, I can be productive even for intellectual tasks. Obviously I do not condone working while under influence, but if it's a friday and I have literally nothing to do (e.g. during lockdown) drinking a few beers, smoking some pot and programming for my side-projects or playing chess around midnight is really fun for me. In the mornings, I just infinite-scroll reddit for at least an hour before I can even leave the bed.