No exercise recommendations across the globe mention an upper limit for safe exercise, but perhaps there is one.

目前，全球尚无有关安全锻炼的上限建议，但或许应该有一个。

youdao

No exercise recommendations across the globe mention an upper limit for safe exercise, but perhaps there is one.

目前，全球尚无有关安全锻炼的上限建议，但或许应该有一个。

youdao