I would really prefer to convince you to stop with the caffeine all together, but let’s at least stop with the caffeine after 2pm. Do you know how long caffeine remains in your system? Well, the half life for caffeine in an adult is 5-7 hours. This means it takes 5-7 hours for your body to process half of the caffeine you consume. So, if you drink 300 mg of caffeine at 3pm you still have 150 mg in your system at 10pm. Ooops! That is not good.
So, this is simple! Lay off the caffeine. In fact, as you keep implementing these sleeping tips you will not need caffeine at all. You will have much more natural energy!!
Dr. Drew Brazier