Who doesn't want to speed up the metab??? Working your lower body can aid in this request! Why? Because all your larger muscles are in the lower body, and when you work those larger muscles, they are broken down and repair to become stronger muscles. Stronger muscles need the extra nutritional support and require more energy for everytime they are broken down and need repair. Now don't run out eat an entire pizza after your leg day, you have to support your body and fitness journey with nutritionally rich foods, but depending on your muscle content, you could be able to eat even more!