Learn "Cortices," a simple do-it-yourself technique that practiced daily can change your life by balancing your brain. An essential part of the BodyTalk system of health-care, Cortices is simple to learn and fast to implement.   You'll be able to use it for yourself, your family members, and your pets. Learn basic concepts and some of the science supporting the idea of "energy medicine." Watch a BodyTalk demonstration session with one lucky class member. There will be plenty of time to ask questions. Instructed by Jenna Caplette of Bozeman BodyTalk & Integrative Healthcare. The class meets Wednesday and Thursday, January 22 & 23rd from 6 to 9 PM and costs $16. You must pre-register through Bozeman Community Education at 522-6012 in order to enroll.