身体维护和修复细胞的机制惊人的有效——这是为什么我们能活这么长时间的原因——但是这些机制并不是完美的。
The body's mechanisms to maintain and repair our cells are wonderfully effective-which is why we live as long as we do-but these mechanisms are not perfect.
人生阶段之间的转换可以用休假来划分，因为人们可以在其中找到时间休息，恢复身体，重新维护关系，或者提高技能。
Transitions between stages could be marked with sabbaticals as people find time to rest and recharge their health, re-invest in their relationships, or improve their skills.
因为您需要它建立和维护精瘦的身体大量，吃含精瘦的蛋白质食品对健康好是关键的。
Eating lean protein is crucial to good health because you need it to build and maintain lean body mass.
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