Seriously, man, if I ever have to give up coffee, they'd better 5150 me.If you notice it changing as you age, adjust your habits accordingly.
(snip)I can drink a triple espresso and be deeply and refreshingly asleep an hour later. (snip)
I get my caffeine from two sources: coffee and Red Bull. I need at least one of them in the morning by about 9.30/10.00am else I suffer from migraines.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.