Ancient tattoos may have had more than just a decorative function.
Ever wonder why it takes so long for a scratch on the elbow to heal? After all, it takes just minutes for a scratch on the eyeball to heal.
A study out of the University of Missouri that found that guys with a "man- of-steel," "I-can-do-anything" attitude tend to heal faster than other guys.
According to the study, the stress that a married couple experiences during a typical argument can slow the body's power to heal wounds by up to two days.