To understand caffeine, we’ll need to put on our white lab coats and go back to science class. Caffeine imitates adenosine.  Adenosine is a chemical produced in the thinker. It’s a pre-sleep chemical that slows everything down and gets you ready for bed. Caffeine is like an adenosi …

Caffeine is good for training of all kinds - weight lifting, cardio, sprinting, and lots of other athletic sports. The effects of caffeine can improve your motivation and push you to try harder. You will get stronger faster if you use caffeine. The best caffeine pills will increase endurance a …