The vocal warm-up lips trills is one of my favorites.
INSTRUCTIONS: Do this first vocal warm-up BEFORE YOU EVEN START SPEAKING EVERY MORNING. Most of my warm-ups are exercises you can pick & choose from, according to which ones you like most. Or you can just rotate through them randomly. But this first lip trill exercise is a great warm-up for every day, and should happen right when you wake up, before you start taxing your voice in any way. This free online singing lesson will help you expand your range without taxing your voice.