For Coffee (recalling I Timothy 4:4-5 4For every creature of God is good, and nothing to be refused, if it be received with thanksgiving: 5For it is sanctified by the word of God and prayer.)
A quick comment, though - how many people who drink coffee for its caffeine drink only 8 ounces of coffee at a time?
Don't forget, however, that rest is a blessing from God:
Psalm 127:2 It is vain for you to rise up early, to sit up late, to eat the bread of sorrows: for so he giveth his beloved sleep.
And, should you use coffee, don't try to take away your friend's blessing:
Proverbs 27:14 He that blesseth his friend with a loud voice, rising early in the morning, it shall be counted a curse to him.
And don't use coffee simply for your own pleasure:
Isaiah 5:11 Woe unto them that rise up early in the morning, that they may follow strong drink; that continue until night, till wine inflame them!