Instructions
Secure your feet underneath the foot supports and grasp hold on to a weight such as a kettlebell. From here, squat backwards, aiming to keep your shins parallel and bringing your hips down as low as possible. As you come up out of the squat, keep the tension in the front of your legs/quads. Lock your knees at the top of the squat to keep the load in your quads. Repeat for desired number of repetitions.
This exercise is also known as the Sissy Squat.