Leg extensions are one of the most effective exercises for isolating the quadriceps. Unlike compound movements like squats or lunges, the leg extension machine specifically targets the knee joint, ...

Add Yahoo as a preferred source to see more of our stories on Google. Unlike compound exercises, isolating the quadriceps allows you to focus all the tension on one muscle group without letting ...

Back squats and leg extensions are two common exercises that are definitely worthy of a spot in your leg-day lineup. Both are done in the gym and work the quadriceps (the muscles on the front of the ...