So what does really help boost energy level for us, folks. I have heard Folic acid, Vit. C and E. Anything else?

My 5 year old son is undergoing a treatment for Thal. Major. Both my wife and I have the minor trait. We are both East Indians. I have been a marathon runner when I was 29 and 30. Now I am 35, just can't handle endurance workouts. Any suggestions?

Wish you luck and God Bless.
Vikram