Voice warm up
Say “hmmm” one note at a time.
Cough a few times.
Roll your tongue saying “R”.
Roll your lips a few times.
Yawn a few times.
Exhale on a “sss” sound.
Lay on your back and sing.
Sources of inspiration https://www.musicnotes.com/now/tips/enhance-your-voice-with-these-vocal-warm-ups-and-breathing-exercises/ https://www.schoolofrock.com/resources/vocals/9-best-vocal-warm-ups-for-singers https://www.youtube.com/watch?v=s8NaAnkmtaA