No.
mastrubating.
It's OK if you really need to do it. Just make sure you are not obsessed with masturbation, 'cause then you got a problem.
In one session? Depends on the guy, his health,age and motivation. 3 or 4 times if you want to work at it, but the fouth time really isn't worth the effort.
If you mean Bell's palsy, there is no reason it should have anything at all to do with masturbation. Bell's palsy is an inflammation of a cranial nerve affecting face muscles, not related to the genitalia.
Whichever age you feel like doing it. I started mastrubating by humping the bed at age 6. Its got lots of advantages so when you feel like doing it, do it.
In the nucleus of the cell, DNA replicates by the work of DNA Polymerase III copying the 5' to 3' strand while DNA Polymerase II ligates the Okazaki fragments on the 3' to 5' lagging strand.
Alcohol can impair judgment and inhibit the brain's ability to regulate sexual impulses, leading to increased feelings of arousal and reduced inhibition. This can make someone more susceptible to experiencing heightened sexual desire while under the influence of alcohol.