The PT pyramid has been used by generations of military personnel to improve fitness test scores for pull-ups, push-ups and sit-ups. The Classic PT pyramid is a great way to build volume and assess ...

When your electrical system is working normally, the two upper chambers of the heart (atria) contract and pump blood into the two lower chambers (ventricles) in a well-coordinated way. This results in ...

There are many ways to create a pyramid workout program. A little creativity will help you build something that works with specific exercises to build muscle stamina and cardio endurance, as well as ...

Atrial flutter is a type of irregular heartbeat, or an arrhythmia. It causes your heart to beat too fast. Atrial flutter doesn't always have symptoms, but it can sometimes have serious consequences if ...