does drinking caffeine at night keep you awake?

Funny - I used to drink coffee non stop during the day and well into the evening - it had no impact at all. Then I had my gall bladder removed and the doctor told me to stop drinking so much coffee, so I started only drinking it in the morning and now if I have it in the evening, it does seem to make a difference in the quality of my sleep.

Nope. But I do drink a lot of coffee all day every day.

Not me

I used to drink caffeine all day.

Now I drink it for breakfast and that is all.

I do sleep better but not a lot better.

I'm surprised at the amount of "no, dosesent keep you up" replies

not really