Without coffee I’m gonna feel like something’s missing in the day. I’m gonna feel awkward; I’m not gonna feel the same. Most of my scripts have coffee stains on them. That’s how you know it’s a Pacino script.

Researchers at the London School of Hygiene and Tropical Medicine found that that caffeine helped improve workers' memory and concentration as well as reducing the number of mistakes they made.

How does Caffeine work? Caffeine is known medically as trimethylxanthine; its chemical formula is C8H10N4O2. When isolated in pure form, caffeine is a white crystalline powder that tastes very bitter. Caffeine blocks adenosine reception so you feel alert. It injects adrenaline into the system to give you a boost. And it manipulates dopamine production to make you feel good.