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.
Skating involves motion from the hip joint in various angles. The hip abduction muscles are the ones that move the legs towards and away from the body. Skating requires you to move in a push-forwards motion. The gluteus maximus and the hamstrings work together to create a push forward momentum.