- 5,5 - 8 hours - if there is less then 7 h I usually have to take a short nap in the evening to keep me going until bedtime
- usually I sleep from 11:00 pm till 6:30am, almost every other day I jog 6 to 12 km before going to bed, I work out in the mornings every single day for about 30 minutes
- 8,5 hours is optimal, (meaning that if I am not exhausted and I sleep uninterrupted I'd wake up naturally after 8,5 hours). Btw: ear plugs really make me sleep deeper and wake up better rested.
- I've never drunk coffee in my life, but I consume loads of caffeine in teas and yerba mate, I try to cut the intake to about 5 servings a day but when I'm at home the entire day I drink one after another like a chain smoker. I don't think a coup of strong black tea in the evening would have any effect on me. I also can't see any effects on my performance if I don't drink tea at all.
I'm 28.