Can a drink actually help you *lose* calories?! It seems it can with Enviga -- a new energy drink from Coca Cola and Nestle.

Launched under the Coke brand, Enviga is a carbonated green tea beverage that claims to burn as many as 100 calories a day just from drinking three 12-ounce cans. The negative calorie effect (thermogenesis) of Enviga happens a green tea extract (epigallocatechin gallate) speeds up metabolism when combined with caffeine.

Red Bull is the Grand Daddy of all energy drinks. It has been around forever. Red Bull was the first energy drink to go mainstream with its apple juice like taste it is no suprise. Beside its taste Red Bull ounce for ounce still has the most caffeine then any drink out there. It has a great taste with a major kick. Red Bull is great alone or with something else.

This is one of the oldest and largest (before the New Jolts) energy drinks I remember. It has a clean fruity taste. This drink is highly caffeinated and tasty. This drink is 2-3 times bigger then Red Bull. If you want to party like a rock star drink some RockStar before you start.