Actually, many guys
experience erection and (possibly)
ejaculation while working out. This is a completely normal thing to happen to a
guy. It is because of the
blood flow to the area can be altered by things like long
situp routines and other ab crunchers that flush blood throughout your
pelvic region.
It doesn't mean that you are gay, or are
sexually excited by working out. Now, this does not mean that a pile of situps will make you
ejaculate, as this only occurs in
certain men. Many guys get
embarrased about getting an
erection at the
gym or what not, but are
curious as to what causes it.