For me there was a optimal caffeine intake for peak leet code problem solving, the biggest thing is that coffee makes me perform better but if that disturbs my

For me there was a optimal caffeine intake for peak leet code problem solving, the biggest thing is that coffee makes me perform better but if that disturbs my sleep that day, then the next day more coffee would make me more wired but much slower at problem solving. So peak leetcode for me is good sleep and adequate caffeine but not too much that it destroys sleep.