"It's 4 am! Where's my coffee?" Not sleeping all night and Vasikin

The Gemara asks: From where do we derive that Abraham our father set a fixed place for his prayer? The Gemara answers: As it is written: “And Abraham rose in the morning to the place where he had stood before God” (Genesis 19:27), and the verb “standing” means nothing other than prayer, as it is stated: “And Pinchas stood and prayed” (Psalms 106:30).

(1) One should strengthen himself like a lion to get up in the morning to serve his Creator, so that it is he who awakens the dawn. Rem"a: At least, one should not delay beyond the time when the congregation prays (Tur). Rem"a: "I have set the Lord before me constantly" (Psalms 16:8); this is a major principle in the Torah and amongst the virtues of the righteous who walk before God. For a person's way of sitting, his movements and his dealings while he is alone in his house are not like his way of sitting, his movements and his dealings when he is before a great king; nor are his speech and free expression as much as he wants when he is with his household members and his relatives like his speech when in a royal audience. All the more so when one takes to heart that the Great King, the Holy One, Blessed Is He, Whose glory fills the earth, is standing over him and watching his actions, as it is stated: "'Will a man hide in concealment and I will not see him?' - the word of God" (Jeremiah 23:24), he immediately acquires fear and submission in dread of God, May He Be Blessed, and is ashamed of Him constantly (Guide for the Perplexed III 52). And one should not be ashamed because of people who mock him in his service of God, and should also go modestly. And when he lies on his bed he should know before Whom he lies, and as soon as he wakes up from sleep he should rise eagerly to the service of his Creator, May He Be Blessed and Exalted (Tur).

From his employer's- one only needs to wake up with the rise of the sun

(11) When is the right time for reading the Shema by day? To observe the precept properly, one should begin reading it before sunrise, so as to conclude the recital of the Blessing after the Shema exactly at sunrise. This interval is about a tenth of an hour before the Sun rises. One who deferred reading the Shema till the Sun had risen, has discharged his obligation—the period for reading the Shema being extended, for one who delayed, to the end of the first three hours of the day.

(13) If one has stayed awake all night, then it is not clear whether he needs to wash his hands for the morning prayer or whether he needs to remove the foul spirit. Rema: He should wash his hands without reciting a blessing. (Rosh, Principle 2; Rashba, Chapter 123).