I drink a lot of coffee up till the late evening or night and it doesn't seem to affect my sleeping patterns at all. I can easily fall asleep soon after finishing a cup, or having had several cups during the evening. It's just that I fall asleep if it's the right time: I tend to go to sleep between 24-02 and wake up between 09-10. But even with coffee, I sleep like a log during that time.
Now you could say my rhythm is "late" exactly because of the coffee.
But I only started drinking coffee towards the mid-20's. I didn't drink a drop until I was 20. But I remember staying up similarly till 24-02 as a teenager (when school mornings allowed that), and I remember vacation season when I was 10-12 years old (didn't have bedtime during holidays), and I happily stayed up way past midnight each day, both during the summer (longer days) and Christmas time (shorter days).
In my experience, coffee doesn't really play a part in my sleep. Thus, while coffee does keep some people up it's not a universal rule.
I mostly only ever drink good coffee which means I generally only drink coffee at home which is where I can make good coffee.
Usually I drink one pot (which is 10 cups on the coffee maker's scale but which comes down to 5 mugs) throughout a single day. But, it varies. For example, today, only two mugs now that I counted.
Now you could say my rhythm is "late" exactly because of the coffee.
But I only started drinking coffee towards the mid-20's. I didn't drink a drop until I was 20. But I remember staying up similarly till 24-02 as a teenager (when school mornings allowed that), and I remember vacation season when I was 10-12 years old (didn't have bedtime during holidays), and I happily stayed up way past midnight each day, both during the summer (longer days) and Christmas time (shorter days).
In my experience, coffee doesn't really play a part in my sleep. Thus, while coffee does keep some people up it's not a universal rule.