Are you interested in building and strengthening your quads? Discover why leg extensions could make all the difference and ...

If you don't have access to a leg extension machine, ... You can stand with your side on a squat rack, power rack, frame, or another type of secure upright for support.

Side Lying Series Leg Extension. How to: Lie on left side with knees bent in a half-fetal position (thighs and knees straight out in front of hips, shins parallel to the side of the mat).

My verdict on the side plank with leg raises. Put enough hours in and they say you can become an expert (10,000 to be exact), I have no desire to put 10,000 hours into these, ...