in answer to the OP . ride harder , get the blood flowing properly and get out of saddle a little more often. I have never had a problem like that.
in response to deep heat , ralgex etc. then NOOOOOOOOOOO.
a friend of mine was getting frisky with his wife and was going to be , errm , well erm , going somewhere else shall we say. the lights were off and she grabbed what she thought was vaseline..... yes you know where this heads..... it wasn't and she liberally applied a dollop of vicks vaporub to a part of his anatomy that shouldnt get it.
oh how we laughed in work.