2. Exercise Your Quads
The leg extension, or knee extension, is a type of exercise for strengthening your quadriceps, which are in the front of your upper legs.
Knee extensions are typically done on a leg extension machine at a gym, but now they can be done from home. You sit on the exercise ball with your foot positioned inside the resistance band, then you use your quads to repeatedly extend your knees and lift your lower legs.
As a group, the quads are the biggest muscle in the human body. The purpose of this muscle group is to extend your knees.
Strong quads are important for walking, squatting, and good posture.