Nope. I have almost no reaction to caffeine except that I know I like it. People drink this stuff for energy? I drink the stuff and then go to bed, sleep 8 hours, and wake up feeling fine. It doesn't matter much whether I drink three cups or three 12-cup pots.
Furthermore, I don't need much sleep either with or without the coffee. I wake up after 6 hours, and I can go coffee-free for the day and be fine. I can wake up after 8 hours and be fine. If I sleep too long over 8, I wake up feeling extremely sore.
And also, I can go 3 nights at a time without sleep without a drop of coffee. I'm actually not exaggerating, here. I haven't done it in years, though. The most I've done lately is 2.
I think my adenosine receptors are just completely numb.