Using your knowledge of anaerobic respiration why would all well trained athletes work to regulate their breathing during strenuous exercise?

The reason why well trained athletes work to regulate their breathing during strenuous exercise is because when doing this type of exercise, it consumes a lot of energy in the body, making a person feel tired easily. In order for them to gain the energy they needed and to not feel tired easily, they need to regulate their breathing because this is a way of providing the energy they needed.