The human body is a wonderous thing, especially when you consider how intricate and efficient each bodily system is. For instance, an adult’s blood vessels could encircle the earth 2.5 times if ...

Several muscles could be called the "largest" in the body, depending on whether you're talking mass or surface area, but the body's smallest muscle has no competition. When you purchase through links ...

What Is the Psoas Muscle? The psoas (pronounced so-ezz) muscles are two large muscles in your lower back. You have one on either side of your spine. They're the main muscular connection between your ...

What Is the Body’s Core? Your body’s core is the term used for the group of muscles within your midsection that stabilize your spine and pelvis. Several muscles and groups of muscles make up the core ...

THE BODY IS a complex machine. Your corporeal form houses over 600 muscles, all working together to help you perform your best every day. Fitness pros tend to organize all of these into different ...