它是一项低冲击的有氧运动，对青少年儿童的身体发育有很大的帮助。
It is a low-impact aerobic exercise, the physical development of children and adolescents are of great help.
与延长运动让你的目标是你身体上或低。
With an extended range of motion it lets you target your upper or lower body.
大负荷的运动训练导致溶血发生，使运动员出现运动性低血红蛋白甚至贫血现象，严重影响运动成绩和身体健康。
Hemolysis may happen during the process of the heavy-load exercise, which can result in sports hypochromia or even anemia, and badly affect athletes' sports level and their health.
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