It's the' 66th medical exercise for the rejuvenation of middle-aged and elderly people. It is a particularly good exercise for the elderly. Music movements have hints and are easy to learn. Exercise all organs and joints of the whole body.

I am the beneficiary of aerobics. About 50 years old, my joints hurt. It's hard to squat. Affect life.

I've been practicing for a year, and everything is fine except my knee hurts a little.

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