Nothing says shredded like well-developed serratus anterior muscles. Also known as the “boxer’s muscle,” they are the finger-like muscles just below your pectorals that extend from the superior (upper ...

Tortoises, because of their solid shells on the back and belly, can't breathe like most animals do, by alternately contracting and expanding the thorax and ribs and the lungs inside. Instead they rely ...

An intercostal muscle strain happens when you pull or partially tear the muscles between your ribs. You can do this by lifting, twisting, or being hit in the ribcage — but healing can take a while.

The thoracic spine is part of your spinal column and is composed of 12 bones that are stacked one upon another. The thoracic spine is located between your cervical and lumbar spines, and it serves as ...