Medically reviewed by Amy Kwan, PT Your latissimus dorsi (your "lats") is a broad, flat, triangle-shaped muscle that spans ...

Mild chest pain from muscle fatigue usually goes away on its own. However, a serious chest infection can be life threatening without treatment. Some potential complications include: sepsis ...

Prolonged sitting, spending a lot of time in front ... cause pain, weakness, and muscle paralysis. Injury to this nerve is rare but can occur as a complication of surgery in the chest or shoulder ...

In this six-part series, we'll give you quick exercises for different body parts every week to help you stay limber.

anyone experiencing breathing difficulties and pain in their chest, jaw, or neck should see a doctor immediately. Many muscles around the shoulder and armpit can cause pain if a person injures them.