Foam rolling is an excellent way to improve your range of motion, so you can get more out of every squat, lunge, and push-up. Foam rolling helps relieve tightness by releasing knots in your fascia, the thin sheath of tissue that surrounds your muscles. This tightness gets in the way of your ability to do exercises with a full range of motion, which may limit the benefits of the exercise. Foam rolling before a workout is a good habit to get into to make every gym session more effective. When you roll, make sure to go slowly and pay special attention to any spots that feel particularly tight, like your hips or calves.