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.
Muscles Helping Out. Your triceps brachii, which is the muscle located at the back of your upper arms, is also heavily recruited during the planche pushup. As you push your body away from the floor, your elbows extend. This component of the exercise is handled by the triceps.