要明白恐惧是压力的一个组成部分，它是一种与穴居时代俱来的“要么对抗，要么逃跑”的复杂反应。

Understand that fear is a component of stress, the complex fight-or-flight response ingrained in us since the cave days.

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至于在穴居时代还未出现的奶制品、谷物、豆类等食物便是不许吃的，同样排除在外的还有含激素的食物以及如精制糖这样的人工添加物。

Dairy, grains, beans and all other foodstuffs unavailable in cave-dwelling days are verboten. So are foods with added hormones and artificial additives like processed sugars.

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根据一项最新的研究，和石器时代的穴居人一样多吃浆果、坚果、瘦肉和鱼，能够大大降低心脏疾病的发病率。

A "caveman diet" of berries, nuts, lean meat and fish could help reduce the risk of developing heart disease, a new study shows.

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