In this double bass lesson Lauren Pierce teaches an exercise which has one of the worst names I’ve heard of, The Dry Heave Exercise! Don't worry it's fairly painless, and if you want to work on your intonation and shifting it's a great fit. There's also a PDF transcription included.
In this video Lauren references her lesson on the Vomit Exercise.
I hope you enjoy the lesson! If you want to learn more from Lauren Pierce please check out her full length courses, available exclusively at Discover Double Bass.