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.
The reason why so many of Coca-Colaâs low calorie drinks contain caffeine â is because they want you to become addicted. The stimulation you get from the caffeine, along with the taste of something sweet â keeps you coming back for more and more.