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14 小时on MSN
"A Pilates ball, sometimes known as a stability ball, is a soft, round inflatable ball which is used to improve strength and ...
The best part, the exercise scientists say, is that the cardiovascular, neurological, and musculoskeletal benefits that come from swimming aren't limited only to young athletes.
Plus, recumbent bikes are the better choice for folks recovering from an injury. “While both [recumbent and upright bikes] ...
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