Does caffeine work well for you?

Caffeine has almost zero effect on me so I got curious how many others it's the same for

For me, coffee has absolutely no effect on me or makes me tired. I started drinking monster energy drinks about a week ago and got so excited that something finally woke me up... Until about 4 days in the effect was lost and I could drink one and fall asleep immediately after lol. My body got used to it fast and I stopped drinking them after the 3rd day of having no effect.

How does caffeine affect you?
Wakes me up
Vote A
Wakes me up but only in high doses
Vote B
Makes me tired
Vote C
No effect
Vote D
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Does caffeine work well for you?
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