Cell exercise

Do not stretch

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Stretching is not always good for your body.
In particular, if static stretching is performed for more than 20 seconds, the performance will definitely decrease.
It can also cause injury.
It has already been proved that static stretching after exercise is useless for both recovery from fatigue and prevention of myalgia.

http://www.topathlete.co.jp/cellexercise/conditioning/ 外部 リンク

Cell exercise conditioning part. Proven performance improvement has been proven and many educational institutions and athletes are also practicing.
Please try it!