wow. i was front sqauting 275 and I did a couple reps and all the sudden I start dancing under the weight when returning to the up position. Shit it even happened when I lowered it. I think I scared my wife lol. So at rep 5, she's like, "are you done?" I said no, took a couple deep breaths and really tried to focus on relaxing my body. That actually helped quite a bit and I hammered out a few more and was good to go. Same thing happened on the leg press.