The long muscle found in the abdomen is called the rectus abdominis. When it becomes very defined, it forms a cluster of six visible protrusions commonly known as six-pack abs. […] 5 Powerful Tips for Getting Six Packs Abs

The long muscle found in the abdomen is called the rectus abdominis. When it becomes very defined, it forms a cluster of six visible protrusions commonly known as six-pack abs. […]

Editors' Picks