 If you have headaches or know people that do, you can know how devastating it can be, particularly if you're getting some of the longer ones of migraines, for instance. And my wife went through this for many, many years and sometimes spent two or three days in pain. Well, we're going to talk about what causes them and maybe some good ways to treat them. Dr. Steve Knopf joins us. He's vice president of chiropractic and compliance at the Joint Chiropractic. And Dr. Knopf, it's good to have you with us today on the program.