I have been using the ATHLEAN-X training program for sometime now and love the results. I have become stronger and more muscular. My arms, chest and back have all made vast improvements since I started training with ATHLEAN-X. I will continue to train with ATHLEAN-X and plan on using the 6 Pack Promise to get a 6 pack in the near future. All the best to you Jeff and TEAM ATHLEAN. Keep up the good work!