Add Yahoo as a preferred source to see more of our stories on Google. Luis Alvarez/Getty Images Have you ever worked out and watched your muscles grow before your very eyes? You probably have, and ...

It is what the fitness enthusiasts call a muscle pump. This temporary swelling happens when blood rushes into the working ...

Find Muscle Pump Latest News, Videos & Pictures on Muscle Pump and see latest updates, news, information from NDTV.COM. Explore more on Muscle Pump.

Get ready for the ultimate pump.

The sensation of a "pump" or muscle congestion during workouts is a phenomenon that many fitness enthusiasts chase with zeal. That temporary swelling, that feeling of full and defined muscles, is not ...