"Alright, 5 more to go. You're doing great." I said unenthusiastically, standing over my friend Mark who was exerting himself on the bench press machine. The poor guy could barely handle 110 pounds. After only 5 reps! Unlike my buddy Mark, I don't have to have someone standing over me, screaming in my face to help me push through a workout. My body is strong and muscular with deep "cuts" in places guys like Mark have no i...