The literature and the main guidelines describe this practice as unnecessary. It is based on a rational proved wrong by the physiology of urination as the Detrusor muscle of the bladder does not perform any kind of “gymnastics” when the catheter remains inserted, because urine emptying occurs through drainage and not by contraction of the same muscle.On the contrary, bladder exercises can be detrimental to the patient because if the catheter is closed several times during the day, especially in the absence of a closed circuit, this determines urinary stasis, which can increase the incidence of urinary infection.