It's my feeling that stimulant use in healthy people is rarely functional at all. I've seen a fair amount of friends try this, and generally very little is gain

It's my feeling that stimulant use in healthy people is rarely functional at all. I've seen a fair amount of friends try this, and generally very little is gained. Often they end up focused on something completely different than they intended. E.g they wanted to start some music before studying, then they ended up spending 5 hours making The Perfect Playlist. Stimulants make you very distractable that way. It can be very hard to control what you end up focusing on. In addition, when able to focus, the quality of work still suffers from several factors such as sleep deprivation and the fact that you forgot to eat or even drink for the last several hours. I've never seen code written in one of these stimulant fueled all-nighters that didn't create more work than it took to write. The only exception I've found is for doing housework and other mindless, repetitive tasks.