The human body's health depends oil a moderate amount of physical exercise and even more mental Labour.

提出机体的健康有赖于适度的体育运动，更有赖于大脑的运动的观点。

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They need to eat healthy foods, but they also have to increase the amount of physical exercise every day.

他们要吃健康食品，不过还得同时增加每天的运动量。

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They wanted to find out whether a certain amount of physical exercise would injure those suffering from heart problems.

他们想要发现是否一些体操会伤害正在受苦于心问题的人。

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The researchers say their findings are not conclusive but suggest that men who want to improve their fertility might want to look at increasing the amount of physical exercise they do if they currently do little.

BBC: Prolonged TV viewing linked to lower sperm count