is it good to do mastrubation?
lol your question heading "nutrition"... agree with the two answers above me, its ok for a guy to use his " five palm sisters", its normal and healthy... depends on what floats your boat, some people do find it a turn on seeing their partner "spank the monkey" in their presence ;)
masterbating is normal, healthy and natural a lot of people do it and theres nothing wrong with it but masterbating has nothing to do with your nutrition
its fine, normal and healthy. you can get sore if you do it too much though. it also releases tension.
If it makes you happy, why worry about it? It's normal and we all do or have done it.
its normal to explore your own body and pleasure yourself also dont be scared
Yes,and it's very normal. Gives yourself pleasure when it's just you.
it's normal and healthy. Perfectly fine to do whenever.