warm up

US /wɔːrm ˈʌp/
UK /wɔːrm ˈʌp/
"warm up" picture
1.

to prepare for physical exercise or a performance by doing gentle exercises or practice

:
Athletes should always warm up before a game to prevent injuries.
The singer did some vocal exercises to warm up her voice.
2.

to become more friendly, lively, or enthusiastic

:
The crowd started to warm up as the band played their favorite songs.
It took him a while to warm up to the idea of moving.