The leg extension, or knee extension, is a type of strength training exercise. It’s an excellent move for strengthening your quadriceps, which are in the front of your upper legs. Leg extensions ...

Leg extension A seated leg extension is a weight machine that people may find at a gym. After selecting an appropriate weight, a person sits on the machine and puts their feet behind the bar.

Repeat the leg extension for the desired number of repetitions, typically 8-12 for muscle hypertrophy and 12-15 for muscular endurance. I added the leg extension machine to my leg day routine ...

Why: Shift from the obvious move to maybe the most difficult of the leg extension alternatives. The name isn't a sign of weakness here—just the opposite. Sissy is short for Sisyphus, as in, the ...