Diet Slippers: The rounded and unstable sole will train your legs, butt, and core and burn body fat. (Exercise at home) A casual walk at home can be used for exercise. You can easily train your core at home without having to go to a sports gym. Start from your lower body: Approximately 70% of the muscles are said to be the lower body. By increasing the metabolism of the lower body muscles, it will lead to a whole body shape.