Science >> Biology for Kids. Muscles are how we move and live. All movement in the body is controlled by muscles. Some muscles work without us thinking, like our heart beating, while other muscles are controlled by our thoughts and allow us to do stuff and move around. There are over 650 muscles in the human body.
Send Feedback. Caffeine Free Coke is the same in every way to Coca-Cola classic except it contains no caffeine. There is also caffeine free versions Diet Coke and Coke Zero for those that love the taste of Coke, but don't want the caffeine.
Energy drinks contain very high levels of caffeine. A single 5-hour Energy shot contains almost as much caffeine as four 12-oz. cans of Mountain Dew. While many people will tell you that Mountain Dew has the most caffeine of any soft drink, that is incorrect. A 12-ounce (355 ml) can of Mountain Dew has about 55 mg of caffeine, compared to 72 mg in the same amount of Jolt Cola, 69 mg for Pepsi MAX, 63 to 69 mg for Sun Drop, or 59 mg for Sugar-free Mr. Pibb.