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.
The farmer's walk may look unusual, but it's a very effective strength exercise. To do it, pick up one or two dumbbells, hold them by your sides and walk around your training area for a distance, like 30 yards, or a time, like 60 seconds.