WHAT'S INSIDE: HUMAN BODY
- Body Parts
- Body Systems
How does a 97-pound weakling become the World's Most Perfectly Developed Man, as Charles Atlas did? Through the sport known as bodybuilding. Here are 10 of the greatest, most well-known bodybuilders to grace the stage.
When it comes to the heart, timing is critical. An irregular heartbeat is inefficient and deprives the body of blood. So what sets your ticker's rhythm?