Okay, pushups. Here's the deal.

My wrists hurt if I do them on my palms, so I do them on my fists. If I do them properly, on the balls of my feet, my feet slide out from under me! Typically, though, I do them on my knees, with a flat back and being careful not to use my lower body to assist in the movement.

Also, if I do them on the balls of my feet, my lower back hurts.

And on top of all this, all the blood rushes to my head when I do them. I've tried breathing in a variety of ways, and it just doesn't help.

If they're so good for me, why do they feel so bad?