This is a video of Joe Bonamassa sharing some of his warmup routine.
One of the things that I like about Bonamassa is how seriously he takes his job. In his 20s, he says that he didn’t need to warm up before a show; he could just grab a guitar and go. But, now he realizes that he can better prepare himself by warming up, so he does so. He understands that people spend a lot of money to see him play, and he doesn’t take that for granted. He’s also extremely open about everything, such as sharing these types of tips.
(via The Guitar Buzz)