Most Helpful Guy
For a women? It depends on what you use? Excessive lube is never a good idea... A vibrator or dildo are safe but not a huge one (will make you loose) guys don't like a lose vagina. You can never go wrong with fingers as long as you only use 2 again don't strech your hole. It is good to know how your body work so masturbating daily is not a bad thing. Now I'd you are asking for a guy. Porn is not good psychologically for men. And we can also make our penis bent/crooked if we masturbate too much with one hand or in a certain position. And again too much lube/lotion daily is not a good thing.
Most Helpful Girl
It can make you a lot less sensitive.