In the well-being training sessions that we hold for different companies, we often encourage people to refrain the caffeine intake to a healthy amount, usually no more than 2 cups a day on average. Although there are studies saying that less than 5 cups of coffee a day is just fine, but the suspicions are always there since 5 cups seem to be a lot, and most of us would not exceed that anyway. The average number is also just about 2 cups a day in the companies that we have conducted surveys. And we all know that most of the tea also contains caffeine, and we need to factor that in as well. Besides, there is also the side effect of addiction to caffeine. People working in different companies have told us that they drink more coffee or tea when they are in office, compared to when they are at home or in vacation. This is quite understandable. Coffee or tea is not just something to keep us awake and energized, but is also a source of inspiration for the email or report that we are str...