Meaning of the word "Clear one's head" in English

What does "Clear one's head" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

Clear one's head

US /klɪr wʌnz hɛd/
UK /klɪə wʌnz hɛd/

Idiom

to relax and empty one's mind of worries or stressful thoughts

Example:
I need to go for a walk to clear my head after that stressful meeting.
A good night's sleep is often all it takes to clear your head.