Below is an instruction from Human. Write a response.
    ### Instruction:
    What causes Urinary Incontinence ?
    ### Response:
    Why Does Urine Leak? The body stores urine in the bladder, which is a hollow organ, much like a balloon. During urination, muscles in the bladder tighten to move urine into a tube called the urethra. At the same time, the muscles around the urethra relax and let the urine pass out of the body.
    