To warm up is to gently wake your muscles before sport, or to heat food again. Warm up first.
Ten minutes of it does more to prevent injury than anything else available. You can also warm up an audience, which is a job somebody is paid to do.
1phraseverbTo gently wake your muscles before sport; also, to heat food again.
“He never used to warm up and it caught up with him.”
warm up is an action.
Practised in Phrasal Verbs