Examples: 5-hour ENERGY (2 oz.)*, Red Bull, Monster Energy Calories: 4*-110 Electrolytes: No Carbohydrates: Yes Caffeine: Yes Protein: No
The Science Says: You’d have to drink 21⁄2 cans of Red Bull to get 200 mg of caffeine. There’s no evidence that the “energizing” ingredients (ginseng, taurine, B vitamins) added will give you a boost.
What It's Best For: If you don’t like coffee, but need a pick-me-up. Buyer beware: there are no studies on how the ingredients act in your body when combined. And the caffeine in them when mixed with alcohol may make you feel less intoxicated than you really are.