Studies have shown that caffeine consumption directly correlates with increased productivity, except when it comes to meetings.
Here's a graph that shows the correlation between caffeine and productivity in meetings:
Caffeine Consumption (mg)
As you can see, productivity increases exponentially with caffeine, until it plateaus at 60mg, at which point meetings start to get really, really long.
For more information on the effects of caffeine on productivity, visit our Caffeine and Attention Span subpage.
Or, if you're feeling really bold, check out our Caffeine and Meeting Leadership subpage.