Caffeine is a central nervous system stimulant.
Cocaine is a stimulant and increases the user's heart rate and blood pressure.
Caffeine increases a user's heart rate and blood pressure.
What does caffeine do?
Options:
A: Increase fame
B: increases a body's strength
C: Release energy
D: Increase user's heart rate
E: Transfers energy
F: decrease stamina
G: Increase intelligence
H: Increase wealth