For patients undergoing catheterization with an indwelling urinary catheter, the urinary catheter is periodically clamped shut to exercise the contractile function of the bladder’s forced urinary muscles prior to removal. After removal of the catheter, the body does not need to exercise the physiological ability to urinate because the bladder itself produces normal physiological stimulation after removal of the catheter. However, without prior clamping of the urinary catheter and adequate exercise of the bladder forcing muscles before removal, there is a risk of urinary retention after removal of the urinary catheter. Therefore, patients can exercise the function of the bladder forcing muscles before having an indwelling urinary catheter that later needs to be removed, for example, by clamping the urinary catheter closed periodically, usually at intervals of 3-4 hours, and then the patient will perceive a significant urge to urinate and then open the clamp of the urinary catheter, a situation in which he or she is able to urinate on his or her own. In addition, exercise of the bladder forceps followed by urethral catheter removal, after removal, does not require exercise to urinate, are able to return to normal physiological urinary function.