Squats! you either love them or hate them, but they sure work!
Begin with your feet slightly wider than hip-width apart and toes pointed slightly outward.
Keeping your weight in your heels, sit back into your deep squat. Make sure your knees do not go beyond your toes.
Holding your squat, raise both of your arms overhead. Hold this position for a moment, and then return to standing while lowering your arms to your sides. This completes one rep.