I lived on 4hrs/night when I was 15-16. I had so many wonderfully interesting things to do, discover and work on. I don't recall ever feeling tired at that age,

I lived on 4hrs/night when I was 15-16. I had so many wonderfully interesting things to do, discover and work on. I don't recall ever feeling tired at that age, and I wish I could go back to that level of drive and energy.