My outdoor training program was born out of my interest in the 6 primitive movement patterns: squat, deadlift, lunge, push, pull, and rotation.  So, that's exactly what we do at PG...we drag sleds; pull sleds; throw and slam medicine balls; swing kb's and walk with kb's.  All human movements that primal man performed to find food and to keep from becoming food comes to life in a PG Outdoor training session.