Caffeine is a central nervous system stimulant, and cocaine is a stimulant and increases the user's heart rate and blood pressure. Given these facts, what does caffeine do among the following options:
- Increase fame
 - increases a body's strength
 - Release energy
 - Increase user's heart rate
 - Transfers energy
 - decrease stamina
 - Increase intelligence
 - Increase wealth


 

    Increase user's heart rate     