mentalstimulant

noun
UK /ˈmɛntəl ˈstɪmjʊlənt/
US /ˈmɛntəl ˈstɪmjələnt/

Something that helps your brain wake up and think better.

Coffee is a mental stimulant that helps many people focus in the morning.


OTHER MEANINGS

2. A substance that increases activity in the brain.

Doctors warned that too much of the mental stimulant could cause anxiety.

3. Anything that makes you feel more awake and alert.

A brisk walk can act as a natural mental stimulant.

4. A drug or drink that speeds up thinking and reaction time.

He avoided mental stimulants late at night so he could sleep.