I drink coffee all day right up until bed time, 1.5 pots of coffee a day on average. Sleep like a rock and frequently wake in the morning in the exact same position I fell asleep in. My wife occasionally notes how little I move while asleep.

Ethiopian Yirgacheffe in the coffee pot this morning, my favorite bean at the moment.

Edit: I should add that I do understand that it effects everyone differently, my wife can't even drink half a can of pop without getting jittery.