Any physical activity should be undertaken gradually and include cardiovascular, flexibility and strength exercises, Tarquinio said.

任何体力活动都应渐进有序，应使心血管、柔韧性和力量都得到锻练。

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Sometimes, it's the 20-to-40-year-old crowd getting sore shoulders from too much softball and not enough stretching, Tarquinio said.

有时，20至40岁的人常常因垒球运动过度或伸展运动不足而导致两肩酸痛。

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