Caffeine is an excitotoxin. It stimulates brain cells to the point of exhaustion or even damage.

Those who need caffeine to get the day started are usually lacking adequate sleep. Good sleep results in a good wake up of the brain. Waking up by force such that caffeine is needed to get going is not optimum. Learning to get good sleep and the proper amount so you can wake up naturally will greatly enhance your life.

If you looked at the lives of successful people, most have highly disciplined sleep routines. They wake up naturally and ready to take on the world.