I have an exercise machine called an elliptical or something, and it's very smooth on the joints but you get a really good workout. I can work out on this thing for half an hour without any pain, but when I go for a run around the block, I get really painful stitches in my side. I don't get it; I'm pretty healthy, I run every other day and eat well but this just stumps me. Are there any explanations to the stitches? Is it because you're bouncing up and down or something?
Tags: