Home Ideas The Speed Bag Is a Highly Underrated Workout

The Speed Bag Is a Highly Underrated Workout

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If you’ve ever walked into a martial arts gym, you’re familiar with the rapid thud-thud-thud-thud-thud of the speed bag. That small, air-filled bag that hangs on a swivel may look innocuous—especially when set against the hulking presence of the bigger, heavier bags—but it happens to be a seriously underrated form of…

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Source: LifeHacker.com