But I was so tired that I went to sleep early.

但我太累了，所以很早就睡了。

Love Money, Hate Dead, Sleep Early.

爱钱， 怕死， 瞌睡早。

To do sth. I found it useful to get to sleep early.

我发现早睡很有好处。

If we want to get up early we must sleep early and the time differs in each season.

如果大家要早起，那么就一定要早睡。春夏秋冬的入睡时间点可以不一样。

Weight Gain: When one goes to sleep early, one produces specific chemicals that inhibit weight loss.

体重增加：当一个人很早去睡觉，会产生特别的化学物质去抑制减肥。

If people sleep early and wake up in the morning, do some exercises and keep the balance diet, they will look young.

如果人们早睡早起，做运动，保持平衡的饮食，他们会看起来年轻。

Parents and pediatricians should keep in mind that children have to develop the capacity to regulate their own sleep early in life and self-soothe themselves during the night.

父母和儿科医生都要明白孩子在幼年就必须培养规律自己睡眠的能力，并且在夜里可以自我安慰。