Dr. Karl Knopf shares his 40 years of expertise as THE authority on baby boomer fitness. Dr. Karl is THE quintessential boomer. He has written the book on boomer and senior fitness as he has authored over 15 books, as well as numerous articles. In this interview Dr. Karl shares his views on fitness, fun, retirement and staying healthy, with a focus on us boomers. To me, Dr. Karl is the Robin Williams of fitness. He is never at a loss for words and his words are laced with gold nuggets of advice for us boomers. Check this out, I guarantee you’ll be wanting more.