What does excessive mean? If you masturbate all day it will interfere with your school, or work, but its not the masturbation that's the problem.Anything done excessively is a problem and can become...
None. aside from being a bit too rough on the penis and bruising it or causing temporary damage to the urethra.
No.
I don't think so...maybe if you have a weak heart/heart disease...it's similiar to this when you do sport...your heart beats faster!
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