The stomach vacuum exercise involves breathing out air while sucking in the stomach to engage the core. It is an isometric exercise to strengthen the core muscles. The abdominal muscles, part of the ...

Explore about what are barre exercises, key techniques and exercises, components of a barre class, and the benefits of barre ...

Diastasis recti occurs when the top layer of your abdominal muscles stretches apart during pregnancy. When this happens, your belly can stick out or bulge, usually on and around the belly button. More ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. If you’ve been ...

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 ...