Are All Energy Drinks Created Equal?

In today's busy society, many people find themselves in front of the energy drink aisle trying to figure out which product will best fit their needs. There are drinks which offer 4 hours of energy and there are drinks which offer 8 hours. There are coffee flavored drinks and there are fruit flavored drinks. Anything you could possibly want is out on the shelves. So here is the hard part, which energy drink is the best for your body?