"If children were exclusively breastfed for six months, continued to breastfeed up to two years, with appropriate additional food from six months onwards, we could save 1.5 million children under five years of age out the 8.8 million that we estimate to die currently every year."

VOA: special.2010.08.04

The ones who would conserve energy, that is they were sedentary when possible, other then when they had to go get food would again not waste their calories but would save them and contribute to the gene pool.

那些保存能量的人,那些能躺不坐,能坐不站的人,除非必须再次寻找食物,否则是绝对不会浪费能量的人,也是对基因库有贡献的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The ones who would conserve energy, that is they were sedentary when possible, other then when they had to go get food would again not waste their calories but would save them and contribute to the gene pool.

那些保存能量的人,那些能躺不坐,能坐不站的人,除非必须再次寻找食物,否则是绝对不会浪费能量的人,也是对基因库有贡献的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选