Caffeine keeps you awake by blocking adenosine receptors — boosting alertness, dopamine, and focus.
Benefits (in moderation):
- Better attention & performance
- Possible protection against Alzheimer’s & Parkinson’s
Risks (with too much):
- Jitters, anxiety, rapid heartbeat
- Messed-up sleep
- Toxicity: headaches, tremors, even seizures in rare severe cases
Takeaway: A little caffeine = focus boost. Too much = brain chaos. Balance is key.
