Im 6'1 and 210 lbs Im trying to get as much musle mass and stamina as I can. In the military I would run 2 miles in unber 10 mins and do over 100 pushups in 2 mins and over 100 situps in 2 mins. I was only 180 lbs then. Im trying to get back to that fitness level. I was told alst night I hit hard like a RHINO but my form is off.