Hello, i'm 15 years old and i've had a pain in my lower back since a year now. I've done alot of tests and it appears that there is nothing wrong with my back. I read this in yahoo answers: Is this true?
One thing I do know is that it can make my calf muscles on the back of my legs quite sore and strained, but it doesn't put me off doing it.
Vandwe - I don't think the lower back pain has anything to do with your masturbation practices. Lower back pain is usually part physical and part psychological. Make sure your doctor carefully treats the back pain and gives you exercises to strengthen your lower back.