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.
Muscle Groups Involved. The thigh muscles involved in walking and running are the quadriceps, the muscles on the front of your thighs; the hamstrings, the muscles at the back of your thighs; and the gluteal muscles, or buttock muscles.