The aspect of the soul called Neshama leaves the body at night during sleep. The impurity that results in its exit centers around the hands in the morning. This is one of the reasons we wash in the morning as we get out of bed. KSA 2:1-2

Early to bed, early to rise; learning Torah and praying before the sunrise. KSA 1:5-7

Rise like a lion to serve Hashem! KSA 1:4

We go to sleep and arise with God on our minds, thanking Him for giving us renewed life, and gathering our physical and emotional strength to go out to do His bidding. KSA 1:2-3

From the moment the Jew awakes in the morning, he turns his thoughts toward God and is constantly aware of His presence. KSA 1:1