Does coffee really keep you awake??

United States
@mssnow (9484)
February 28, 2008 2:39am CST
I usually drink coffee in the morning. Not because it wakes me up but because it warms me up. Coffee does not keep me awake in the morning. If i drink it at night I can still go right to sleep. I guess caffeine doesn't affect me the way it does some people. How about you?? Does it keep you awake or can you still sleep??