Yog tias koj tab tom sim poob phaus los ntawm treadmill, koj yuav tsum tuav lub sijhawm ua haujlwm, nws yog qhov zoo tshaj rau kev tawm dag zog ntawm 30-40 feeb.Vim tias thaum pib ntawm kev tawm dag zog, lub cev noj cov suab thaj, tom qab 30 feeb ntawm kev siv zog yuav pib siv koj lub cev ...
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