My dad didn't need a lot of sleep ( until 68 years). I don't either ( 3,5 - 5 hours). I think it's genetic also, yeah. On 8 hours of sleep, I'm tired the enti

My dad didn't need a lot of sleep ( until 68 years). I don't either ( 3,5 - 5 hours). I think it's genetic also, yeah. On 8 hours of sleep, I'm tired the entire day.