Noun
plyometrics (uncountable)
A form of exercise that involves the rapid stretching and contracting of muscles to develop muscular power.
Synonym: (informal) plyos
My girlfriends and I just started doing plyometrics. It's a killer - it hurts so much. But when you walk out of there, you're like, 'I can't believe I just did that and my body looks this good.' Kelly Osbourne
Most people don't think about plyometrics when they think about powerful strength. But I do lots of them to build mine. Allyson Felix
One category of such exercises— plyometrics —employs repetition of discrete jumping-related movements to increase speed, agility, and power. Source: Internet
Technically, bounding is part of plyometrics, as a form of a running exercise such as high knees and butt kicks. Source: Internet