How Caffeine Affects the Nervous System
Caffeine is one of the most commonly consumed stimulants in the world. It works primarily by blocking adenosine, a brain chemical that promotes relaxation and sleepiness.
As a result, caffeine increases:
- Alertness
- Nervous system activity
- Heart rate
- Wakefulness
While moderate caffeine intake is well tolerated by many people, its stimulating effects can sometimes worsen movement-related symptoms in susceptible individuals.
