My daughter just turned 4 and she is in preschool recreational gymnastics. She is new to the 4 year old class but has been in gym since Sept. Last class while the other kids were working on swinging on the bar and doing skin the cats with spotter (Bean can already do them without help), one of the coaches had her holding a higher bar and bringing her legs in a pike to the bar and touching it with her toes, then lowering and doing again. Is this just for strength or does it progress to something? It looked like such a hard work! Thanks!