This exercise, like the Dog Hydrant, is made to work the core, hip muscles/joints and glutes (buttocks). Again, make sure your arms stay directly underneath your shoulders for stability.
Make sure to keep your arms directly underneath your shoulders for stabilization during this exercise. Extend your leg back, once in extension pull your knee (leg) toward you, then lower your knee to the floor. The motion mimics a cycling motion. The goal is, as you lift your knee from the floor, you want to try and get your inner thigh to be parallel with the floor. The higher you can get it, the more your intended muscles are worked.
2 sets of 10 reps on each leg.
**The only time a new exercise should be introduced/transitioned into is when the current exercise is mastered. You know when you have mastered that exercise when YOU can control that exercise and the intended muscle(s).