A couple of months ago I had a spell where I was going to the gym quite a lot. I actually enjoyed running on treadmills and could push my heart rate right up. However, I found that the irksome part wasn't the tiredness from running, but more the constant moving about of my excess stomach fat (as I do carry more of it than I should!). This is quite a bit of an annoyance and has made me get cramps before when running, which deters me from doing it even though I enjoy the exercise itself.
Is there a specific item I can get that can hold it all in place and stop it from "jiggling" about, like some sort of harness or body compressor?