To start things off i'm currently 5'4 and weigh 123 pounds. In case your wondering i'm only 13 years old. I would say i'm pretty in shape for my age. I run at least a mile everyday on the tredmill, and i'm starting to get close to a mile & 1/2. I do basic excercises, 30 crunches in the morning and 30 crunches at night before I start running, and sometimes do it freely if i'm just bored. The most pushups I can do are 20 which I find pretty sad, I don't work on my pushups much. I use to lift 15lbs, but I quit about two months ago when I finally cared about my height. I'm taking wrestling which is my 1st experience next week. I think i'll do fine since i'm the biggest one there, and yes I know i'll be facing other people in my weight. I also drink protein shakes everyday and try to eat as much as I can. I've also noticed that i've gotten faster when I started sprinting during my suicides in basketball practice. Did I get faster by sprinting suicides? Should I keep sprinting? I usually don't sprint in suicides, only straight foward. So do you guys have any tips on how I can increase my cardio at my age? What I can do for wrestling? Running? Basic excercises?