They may say rubbish, but its not

I know I go on about acupuncture and the bladder meridian, but funnily enough I am very aware of mine. Why? because I do not get a message from my brain to my bladder that I need to have a wee, but when I do I have a tight feeling in my knee and my right leg, it will flex sometimes if I leave it too long. So when they say listen to your body, they dont mean with your ears