Why is it that when I squat (400lbs) I can do all of my sets with no ill after effects. Even one legged squats (up to 200lbs) cause me no problems other than maybe DOMS.
When I climb stairs I find myself out of breath. I got on the stair machine last night at the gym and I was able to do it for about 2 minutes (1 min x 2) but at the 2 minute mark I was about to puke and I was winded.
Why? What's the difference between stairs and squats (or other leg exercises)? why do I feel like I'm going to puke and why am I out of breath on the stairs but not squatting. I started feeling bad probably 15-20 seconds into it.