On the other hand, closed kinetic chain exercises involve movements where the hand or foot is in a fixed position, such as during a squat or pushup. These exercises require multiple joints and ...

"Restricted thoracic mobility generates compensation elsewhere in the kinetic chain," says Steven Dick ... is unable to extend correctly during a squat, you'll typically notice excess lumbar ...

but they also light up your entire posterior chain. While the exercise is straightforward, any veteran lifter will tell you your squat is only as good as your mobility allows. That's why moves ...