Your Health October 16, 2013 Craze sports supplement

If you crave, the popular sports supplement, Craze, medical experts say they may know why.The product is marketed as containing only natural ingredients, but researchers found it contains a potential harmful chemical.Harvard Medical School researchers say the popular pre-workout powder appears to contain a chemical similar to methamphetamine.This is according to an investigation by USA Today.Researchers say, Craze might pump you up in your workout, but the risks you might be putting your body under of heart attack and stroke are completely unknown.Walmart and many online retailers have stopped selling the supplement, Craze; however, it continues to be available on some web sites and the some health supplement chain of stores.The supplement maker, Driven Sports disagrees with the findings.