Legal, Maybe Not Provable. Entering into an oral contract is one thing, but proving that the contract exists, or that specific terms of the contract exist, is entirely different. Oral contracts are legally dangerous, because there is no concrete record of their existence.
The classic ballet move, the pirouette, is a complete 360-degree turn performed on one leg. In a ballet, it is usually done more than one time, in a twirling motion. Leg muscles used in a pirouette are the calves, hamstrings and quadriceps.
Primary Muscles Used: The Legs. The two major muscles groups involved in elliptical exercise are the quadriceps on the front of the thigh, and the hamstrings at the back of the upper leg. The quads help to lift your legs while the hamstrings help to return it to the start position.