When you work out you want to look thin (I mean, I know the point of exercising is to get thin--but everyone wants to speed up the process), so workout leggings with compression and/or tummy control are totally necessary. Plus, you don't want them slipping down while you work out and causing the dreaded muffin top overhang! I live for workout pants that smooth my middle--and have included some of my very favorites here (SPANX Active Life leggings are the best!!!!!). Shop now-->