Thursday, July 3, 2008 --- 9 a.m.

LUBBOCK, Texas (AP) -- You love watermelon -- but will watermelon help make you a better lover?

Researchers report watermelon contains a natural substance that triggers a Viagra-like reaction. The ingredient in watermelon is citrulline, which reacts with the body's enzymes to relax blood vessels.

But researchers at Texas A&M University say unlike Viagra, the watermelon effect isn't confined to a specific body part. They say watermelon could also be beneficial for those with high blood pressure and other cardiovascular problems. But the researchers caution that too much watermelon will have you running to the bathroom instead of the bedroom.