you need a lift - nuun energy elevates your hydration the levels of caffeine and b vitamins give you a boost, and help maintain higher levels of energy get electrolit during exercise a mere 2% loss in body weight can lead to a decrease in exercise performance. nuun energy contains a complete electrolyte blend, with added nutrients to help metabolize food into fuel, and provide mental clarity and focus. electrolytes: help prevent dehydration b vitamins: naturally breakdown stored carbohydrates and fats into fuel caffeine: helps increase endurance output, while providing mental clarity and focus each tablet contains: sodium: 360 mg potassium: 100 mg magnesium: 24 mg calcium: 12.5 mg vitamin c: 37.5 mg riboflavin: .5 mg niacin: 20 mg vitamin b6: 2 mg vitamin b12: 6 mcg pantothenic acid: 10 mg caffeine: 40 mg under 10 calories zero added sugars