Just in time for the Fourth of July, researchers at Texas A&M are reporting that watermelons can have a Viagra-like effect on the body and may increase libido. Citrulline, a phyto-nutriant that occurs in watermelons, has the ability to relax blood vessels, so break out a watermelon or two this holiday weekend and get… » 7/01/08 9:45am 7/01/08 9:45am