Does coffee not affect some people as much because I hardly ever drink coffee (about twice a year) and the?

Question

other night I had a cup of coffee about 2 hours before bed with like 4 spoons of coffee granules and I still felt tired and fell asleep easily?

Answer 1

It does not have the same perk effect on everyone. As a diuretic, it does cause that problem. Mostly caffeine dialates blood vessels.