This could be why 👇
Caffeine is metabolized in the liver, but not everyone metabolizes it at the same speed.
This depends largely on the activity of a certain enzyme (called CYP1A2).
Depending on the activity of this enzyme, you could be a slow metabolizer or a fast metabolizer of caffeine.
Slow metabolizers feel the effects of caffeine more intensely—with jitters, nervousness, restlessness, racing heart, or trouble sleeping.
Fast metabolizers don’t.
🧬 This is based on genetics!
The best thing to do is to know your limits and not buy into the caffeine culture if it doesn’t work for you ☕