Hi I was wondering if it becomes harder to maintain muscular endurance as you get stronger. I've noticed this over the past year in certain exercises such as the push-up my performance has diminished, yet my maxes for bench press, military press, etc. have been steadily increasing. Also, as a runner, I thought I'd be relatively good when I starting out on squats last year. I was wrong as hell. Do you think running a lot (to me, it would be anywhere from 30-50 miles per week) screws up your ability to squat a lot, or get stronger in leg exercises in general?