Just to add something that needs to be thought about. When you workout, gymnastics, sprinting, or other explosive sports, you must be cognitive of the goal. In gymnastics that goal is controlled explosive power. This goal is unattainable if you train your gymnasts like a long distance runner. The training must be short explosive controlled exercise. Think about bars and side stations. The goal is to complete a beautiful complete routine and to do this takes many things, shapes, power, control, body position, and many others. If during training the athlete moves and exerts themselves constantly for a 45-minute rotation it is likely that the athlete will be overtrained. I can see them being too fatigued to complete a bar routine. The best coaches understand the amount of exertion that each athlete should give to achieve their maximum benefit. So do not focus on the rest or standing around, rest is needed. Instead, focus on what is being done and how thought out it is to determine if each athlete is getting the correct amount of training.