I would advise against this attitude in general because even for the same person it varies. When I was in college, I once slept like a baby after taking an even

I would advise against this attitude in general because even for the same person it varies. When I was in college, I once slept like a baby after taking an evening time 4 shot espresso drink. I tried the same thing a few months later and couldn't sleep a wink (this was the night before a final exam). I drink afternoon coffee all the time and am usually fine. I tried it 2 days ago and couldn't sleep at all. My unscientific speculation is that eating a light dinner that night combined with the coffee was too much.