As used in the phrase null and void, refers to something that binds no one or is incapable of giving rise to any rights or duties under any circumstances.
The quadriceps is muscle group consisting of four muscles that flex the knee, which is a major movement of the farmerâs walk. These muscles are the rectus femoris, vastus intermedius, vastus lateralis, and vastus intermedius.
They extend from your pelvis to the top of the bones of your lower leg. The hamstring muscles -- including the biceps femoris, semimembranosus and semitendinosus -- play an important role in activities such as walking, running and jumping. The hamstrings function to bend your knees and move your hips backward.