Thanks for query,
is a healthy practice to satisfy our sexual desire if it is within normal range.
There is no protocol that how much time it should be done in a day or week considered as normal but usually when we fell it's desire we should go for it.
You should be sure that sex is in our mind.
You have to divert your mind first.
When you have desire of it just change your mind busy in other activity like reading,playing etc.
Take a public position or just take a position in a place where more persons are there.
Do some meditation
Stop reading sex related books or stop surfing sex related site.
Your whole life is there to enjoy so don't use it in short time.