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.
Without principle of stability, the center off mass would throw entire pirouette off and you would fall. Non-dominant leg: Ball of the foot is left on ground, heel lifted; more flexion in knee towards ground. Bloopers! Put as much force as possible in rotating the way your turn is rotating with arms in 180 degrees, body and hips rotated to face sagittal plane, but head stays looking at the front.