I drink a lot of black tea (about 60mg of caffeine per cup) throughout the day. Between 6-8 bags. My last cup is usually around 8pm. I’m soundly asleep by midni

I drink a lot of black tea (about 60mg of caffeine per cup) throughout the day. Between 6-8 bags. My last cup is usually around 8pm. I’m soundly asleep by midnight and get a lot of deep and REM sleep (as validated by my Apple Watch). I do have to mention that I don’t get very noticeable effects from caffeine, probably because according to a 23andme test, genetically caffeine doesn’t affect me as intensely as most people. I mostly drink the black tea because I love the taste of fruit flavored, unsweetened black tea.