thanks Sem and Blud! I'm just starting a project on building stamina and a bit of mass at the same time, my BMI is 21 (my length = 75 inches, weight = 165 lbs.), which according to the ones I've talked to is quite good, I can run about 2miles in a coopers test, but can only lift about 155lbs on a bench (as an example of my muscle condition). Thanks for the warning about over doing the exercise, didn't think of that myself :P yeah, these skills might be needed later on in Civ. life, I'm also going to take part in officer training -> only place to study leadership properly. also this way i can go back to work/live for the army if need be, as I said: I'm itching to get there!