Mary Lee Tracy. Core Conditioning at Beam May 15, 2012 by Mary Lee Tracy Leave a Comment Mary Lee Tracy shares some great exercises for core conditioning at Beam. Check out her youtube page to get some other great drills. Share your drills and exercises at Gym Momentum. Facebook0TwitterLinkedin0GoogleEmail Related posts: Welcome Failure, a prerequisite for success Al Fong Trampoline for Team Part 2 of 4 Top TEN of 2011 Functional Path Training- Technique