When I was first learning how to train, I used to do full squats. I did them exclusively for the thighs. I labored under the belief that if I did my full squats faithfully on a firm reps and sets basis, I would get everything I needed in the way of thighs. Over the years my thinking has changed considerably.
Everybody does squats: weightlifters, bodybuilders, football players, track athletes and even ballet dancers. The squat increases the power, speed and spring of the legs. When practiced with heavy breathing, it permanently expands the rib cage. It can help you gain weight. It can help you lose weight. with these multiple benefits, the squat goes on record and the best all-around exercise.