You love coffe and Hocus Pocus, this Hocus Pocus I Need Coffee To Focus shirt is great shirt for you. Caffeine easily gets into the brain, and affects many kinds of neurons (brain cells) in a positive way. Studies continue to show that caffeine can increase mental focus and concentration. Caffeine is really “nature’s stimulant” – in caveman times, a quick boost when you had to run away from a predator trying to eat you, or needed extra energy to go forage for food. While moderate caffeine intake can boost your ability to concentrate, and improves mental alertness, it doesn’t make you smarter – and has no effect on learning! DOSE is important – and that’s what we look at in our next fact.