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Caffeine works by blocking adenosine receptors in the brain that normally induce sleepiness. By blocking these receptors, caffeine prevents the "sleepy signals" of adenosine and keeps the brain active and alert. However, regular caffeine consumption can cause the body to develop tolerance by increasing adenosine receptor production. Abruptly stopping caffeine after regular use can then cause withdrawal symptoms like headaches and fatigue as the body adjusts back to normal receptor levels. Caffeine provides
- Author
- duc nguyen
- Language
- EN