A punching bag is a durable, padded bag used for practicing punches, kicks, and other strikes in combat sports and fitness training. It is usually filled with materials like sand, cloth, or foam to absorb impact and is covered with strong materials such as leather or synthetic fabric. Punching bags can be hung from the ceiling, mounted on a stand, or designed as free-standing models. They help improve strength, speed, accuracy, and endurance while also serving as a useful tool for practicing techniques and relieving stress.

英語での「punching bag」の定義と意味

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