[nicolashahn]

I make about 16oz of slightly above average strength coffee when I wake up at 9-10am and drink on average about 12oz of it throughout the day until 3pm where I cut it off completely. I've found that this makes my mornings and early afternoons very productive (I think faster and can focus better) but I'm still able to fall asleep at night around 1-2am (as long as I exercise enough and have good sleep hygiene in general). I get a little slow around 4-5pm but overall it's a net positive addiction. I also usually drink much less or no coffee on Sunday and can sleep 9 or 10 hours that night.

I think my genetics mesh well with caffeine. My sister and everyone on my mom's side of the family loves coffee and none of us have any side effects from it. I discovered I liked it in college and it significantly boosted my motivation, grades, and life in general, so I kept with it. I tried going off it for a few months when I thought it was causing me sleep problems, but the cause was something else and I've been happily drinking coffee almost every day since.