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.
June 28, 2012. The quadriceps are a group of four muscles on the front of the upper thigh that work together with the hamstrings (on the back of the upper thigh) to extend and bend the leg. Having strong, powerful quadriceps is necessary for athletes in high-speed sports such as track and field, football, basketball, and soccer.