5
votes
5answers
14k views

How long after you drink coffee before it starts being useful

That is to say, how long before you notice the effects, feel more alert, and so on. I'm assuming it's different for each person, but there must be a range. Also, does it differ for different types ...
8
votes
3answers
558 views

Coffee: good or bad for work? [closed]

Are there any reliable researches defending the regular consumption of coffee at work?