Zzzz

 Falling asleep without intending to? What you really need is sleep, not a caffeine. Please get some sleep.

I don’t drink anything - no strong drinks, no coffee, no soda. I just try to nap before 10pm. Two hours of sleep after 12am is equivalent to 1 hour of sleep before 12am. So try to sleep early and wake up early, and you will be more rested.