No reaction to caffiene?!

Caffeine affects people differently. Some people get energized, some people just feel jittery, and some people, like you might not really have a significant effect. It depends on how your body works and stuff.

As for me, I get super energized! Until I crash of course. =P

You are addicted to caffeine. Instead of getting a jolt like normal people, you are just giving your body the baseline amount it needs just to prevent withdrawal. Cut back on the caffeine. Your body will readjust and then it will affect you like it should again.

some people don't react the same way to caffeine. i used to be able to drink mountain dew at midnight and fall right to sleep, but for some reason a few years later i can't have caffeine past 2pm or i won't be able to sleep.

you need a 4loco