Join Dr. Michael Ross DC,CSCS (Ironman Triathlete, Coach, and Sports Chiropractic Physician) as he leads you through a 47 minute muscular endurance workout. This is a great conditioning tool to prepare your body for additional sports specific work. Each exercise is conducted for 45 seconds with a 20 second recovery period before the next set. You may enhance the workout with the addition of a medicine ball and use of cones (although neither is required to benefit from the exercises). If you are seeking an additional challenge, try doing the exercises barefoot or with the addition of a balance pad. Dr. Ross films this routine in a clean studio setting without any cuts and the bar at the bottom of the screen helps maintain each interval. His instruction, encouragement, and insight are all appreciated and keep you on task with the proper insight and motivational cues. If you are doing this workout inside you may also benefit from having a fan blowing to keep your body temperature more comfortable. You may play this video with full audio or with no background music which is a nice feature of this DVD. If you are a runner in a base phase of your program you would benefit most from these agility, balance, coordination, strength, and plyometic exercises if done twice each week. Combine this video with others from Amazon.com for free shipping or purchase it directly at a special rate from the official website, DrTri.com where you can learn more about this production. The trailer can be viewed below: