Squats target all your major muscle groups and you can do them any number of ways. Squat to a dining chair and stand up, perform regular squats with a jump or even sumo squats, which involve a wider stance. For a basic squat, start with your feet shoulder-width apart, toes slightly turned out. Keeping your chest up, belly braced and eyes on the horizon, sit back and down. Push through your feet, press wide with your knees and squeeze your butt as you stand up.
