keep your hand in
US /kiːp jʊər hænd ɪn/
UK /kiːp jʊər hænd ɪn/

1.
mengekalkan kemahiran, tidak hilang sentuhan
to continue to do something regularly so that you do not lose your skill
:
•
Even though she retired, she still teaches a class once a week to keep her hand in.
Walaupun dia sudah bersara, dia masih mengajar kelas seminggu sekali untuk mengekalkan kemahirannya.
•
He likes to play chess occasionally just to keep his hand in.
Dia suka bermain catur sekali-sekala hanya untuk mengekalkan kemahirannya.