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.
Some diet sodas also contain caffeine. Sodas such as Diet Mountain Dew contain up to 55 mg of caffeine in a can, and the majority of diet sodas have about 40 mg of caffeine. Just to give you a comparison, a cup of espresso contains about 100 mg of caffeine. I mention this because there has been a recent focus on caffeineâs effect on insulin sensitivity.