A muscle strain in the chest may cause sharp pains when moving or breathing. They commonly occur due to impact injuries or overuse and are often treatable with rest, pain relievers, and physical ...

Your pectoralis major is a large and powerful chest muscle that’s shaped like a fan. It starts from two sections: your breastbone (sternum) and your collarbone (clavicle). The two sections come ...

A torn pectoralis major muscle, or pec muscle, is an injury that many of us have probably not heard of. But it's a serious injury striking boxers, pro wrestlers, bodybuilders, and even a growing ...

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. You've probably heard ...

Sometimes people experience chest pain while exercising. There are various causes of this, some of which may be serious. Everyone who exercises regularly should recognize the symptoms that can ...

Chest day workouts generally fall into one of two camps. The first (and most prevalent) is pressing exercises, like the all-important bench press and push-up, since your chest is responsible for ...

Developing bigger pectoral muscles, or "pecs," is one of the most common goals for anyone focused on building upper-body strength or improving their physique. After all, a strong, well-developed chest ...

Feeling a sharp pain on your left side when taking a deep breath can be alarming! Here's why you might be experiencing it.

If chest flys never seem to deliver the chest growth you expect, the problem is probably more execution than effort. According to legendary bodybuilding coach Charles Glass, a small adjustment can ...

Without realizing it, many of us start our day by stretching before we even get out of bed. Involuntary stretching of your muscles is called pandiculation. It’s a behavior seen in most types of ...