Mark Rippetoe, author of Starting Strength, details the how and why of pushing the prowler for conditioning. Starting Strength: https://startingstrength.com Find a Coach: https://coaching.startingstrength.com... Find a Gym: https://coaching.startingstrength.com... Starting Strength Gyms: https://startingstrengthgyms.com Seminars & Training Camps: https://coaching.startingstrength.com... Become a Starting Strength Coach: https://startingstrength.com/careers