Meaning of the word "keep your hand in" in English

What does "keep your hand in" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

keep your hand in

US /kiːp jʊər hænd ɪn/
UK /kiːp jɔː hænd ɪn/
"keep your hand in" picture

Idiom

to continue to do something regularly so that you do not lose your skill

Example:
Even though she retired, she still teaches a class once a week to keep her hand in.
He likes to play chess occasionally just to keep his hand in.