I have worked with people that do not need caffeine to be far more productive than myself with caffeine. Also read research which claims caffeine only brings pe

I have worked with people that do not need caffeine to be far more productive than myself with caffeine. Also read research which claims caffeine only brings people with caffeine tolerance to a normal level of alertness, i.e. its counter productive to use caffeine frequently. Unfortunately I cannot fix the cause, lack of sleep, so I try to address the symptoms.