In addition to strengthening the muscles, lungs, and heart, regular physical exercise also strengthens the immune system.
In addition to strengthening the muscles, lungs, and heart, regular physical exercise also strengthens the immune system.
“Adding plyometrics to your routine increases the force you can produce with each movement,” Kennihan says. “While running, after each foot lands on the ground, there’s a push-off. Plyometric training ...
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