Some of yo are right about the healthy arms and healthy penis.
You dont use = you may lose.
The thing is men make sperm for the entire lifetime they are on
earth whilest ladies can only release ova til menopause.
Masturbation is good for the body and the mind as the result should
be the release of friendly hormones.
However, with certain genetic lines it is believed that too much
se/masturbation can result in hair loss (on head). Thisis not
attractive but only some men go through this problem.
It is better to masturbate than to pressure a girl/partner into
sex or yourself into sex before you are ready to. There are alot of
std/sti's residing in the general population including like 30
strands of hpv and 80% of "world" population with hsv1 (however i
believe mostly caucasian).
It is also rumoured that the popular archaic philosopher niche
died of syphillis to the brain from a secret visit to a prostitute.
These days prostitutes in legalised countries are checked
compulsorily for health and so is every client (however client
checks are somewhat wayaward).
It is rumored everybody masturbates. Please see the movie
"American Pie" for more information.