It's never too soon to start good habits: Let baby eat when hungry, stop when full, and get enough physical activity.

让宝宝养成良好的进食习惯还是尽早为好：饿了才让宝宝吃，吃饱后就不再喂，进行足够的体育活动。

youdao

It's healthy to eat when I'm hungry and to stop when I'm full.

我饿了就吃、饱了就停是有益健康的。

《柯林斯英汉双解大词典》

Most Thai people do not sit down to eat a proper meal because they usually eat when they are hungry, especially kids and teenagers.

大多数泰国人不会坐下来吃一顿像样的饭，因为他们通常会在饿的时候吃，尤其是孩子和青少年。

youdao

When you're really tired sleep is what you want to do like when you're really hungry you want to eat.

你累了，就会想睡觉,正如你饿了想吃东西一样。

耶鲁公开课 - 心理学导论课程节选

It means that we want to eat when there's food around, and it doesn't matter so much whether we're really hungry.

这就意味着只要周围有食物我们就想吃,不管我们是不是真的饿了

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Even when given the option to eat when hungry or to stimulate the pleasure center, the rats chose the stimulation until they were physically exhausted and on the brink of death.

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