A single-leg squat is a rear-foot-elevated split squat performed on a high surface like a bench rather than a step. It’s a great exercise for stretching the hip flexors, but you can enhance the effect by extending the arm on the same side as the elevated leg while holding a weight. I call this variation the “Statue of Liberty” squat.

To really stretch the entire fascial line, place the top of your foot on the bench (shoelaces down) and extend your wrist back—using a kettlebell works particularly well. It may not undo years of sitting, but it certainly won’t hurt. (Actually, it might hurt a bit!)