Im not a doctor but there are risks and possible side effects from common sense things, like getting a cut from the pump can cause infection, over inflation is very bad. We really dont know because this isnt something thats studied like health problems or certain things, our bodies and reactions caused. Do you need to do it is the question? My wife loves the size I am and putting both balls in her mouth at once, so thats a no for me. It does last up to 24 hours, for your balls, cock only 20 minutes maybe 30 with cock ring but thats dangerous because of some reason.