Why Does Coffee Make Me Tired? Shouldn't It Wake Me Up?
Because coffee (and the caffeine it contains) is a stimulant the body produces cortisol when we drink it. Cortisol is a 'stress' hormone which prompts us to wake up every morning. It also helps us when we are in the fight or flight mode. When this happens the body reacts by releasing its energy stores which are normally reserved for use when we need to fight to survive. This is why we have a surge of energy which is responsible for giving us the extra strength we need to ensure our survival when we are faced with a dangerous situation. If our store of energy is not replaced, we feel drained when the boost we experienced because of our caffeine intake has dissipated. The caffeine in our coffee will use up our muscle glucose and so our blood sugar level falls. This loss of blood sugar can cause us to feel sad, tired, or irritable. There are other possible reasons for experiencing tiredness after an intake of caffeine. One of these is that you are stressed or exhausted, or both,...