Squats: Squats are a great holistic exercise because they engage many muscles at once. To do a body-weight squat, stand with your feet shoulder-width apart, then slowly bend your knees, dropping your hips and glutes down and back, keeping your back straight, as if you’re sitting down on a chair. (You can place your hands on your hips or stretch them out in front of you for balance.) Bend your knees until your thighs are parallel with the floor, then return to an upright position. Repeat 10 times, up to three times per day.