Please Scroll Down to See Forums Below 
Princeton University researchers have found the male hormone testosterone masks feelings of pain, Nature Science Update reported.
Researchers said they think testosterone triggers a chain of events to increase levels of enkephalins, natural painkillers.
They said it may help explain why men are more willing to fight.
Researchers said they think testosterone triggers a chain of events to increase levels of enkephalins, natural painkillers.
They said it may help explain why men are more willing to fight.
