Both the Army and Navy incorporated this training regimen into their programs for recruits, as it proved effective regardless of starting weight or fitness level. Trunk Twister“ (replaced by Army’s helicopter)ĭeveloped by Walter Camp in 1920, the “daily dozen” originally consisted of 12 simple exercises that took about 15 minutes to complete.Four Counts Push-ups* (replaced by Alligator rolls).The famous exercise routine was created by Walter Camp, a former college athlete, successful businessman, and prolific writer of books and articles on sports and the outdoors. The “Daily Dozen” referred to a set of twelve calisthenic exercises that were performed, well, daily, in an attempt to stay healthy and fit.
