Whether you want a six-pack or you just want a strong core for optimal health, consider replacing crunches and sit ups (which can damage your lumbar discs) with these three core stabilizing plank variations which are favorites among my JJFit Challenge crew.

         

CEO of Speaker Media and Marketing, is the "Secret Weapon of Personal Injury Lawyers and Trial Attorneys" throughout the United States. Specializing as a marketing consultant to lawyers, with a primary focus on content marketing, social media, online video and mobile marketing strategies.