Medically reviewed by Christopher Lee, MD Congestive heart failure (CHF), often called heart failure, occurs when the heart ...

Muscle cramp involves a sudden, involuntary contraction and tightening of a muscle that will not immediately relax. It can range in intensity from a slight twitch to a severe contraction, lasting ...

It involves the active tightening of your muscles and moving your joints through their full range of motion throughout ... Do not allow your front knee to drive past your front toes. Push off the back ...