First of all, using dumbbells to squat will exercise the muscles of thighs and buttocks, and basically will not exercise the stomach. Want to stovepipe, need to cooperate with aerobic exercise, such as running, skipping rope, or the popular hiit in the gym. The key is not only exercise stovepipe, but also diet, which will make the leg shape look good. If you want to thin belly, you can do sit-ups, mountain climbing (below), crocodile push-ups (you can exercise to the side of your abdomen), and supine leg lifts.