Jackson is a fitness trainer and a former high school teacher who has worked in the fitness industry for more than 30 years. He has trained clients in the mecca of bodybuilding at Gold’s Gym in Venice and been coaching CrossFit for over ten years. He has written for T-Nation, bodybuilding.com, Elitefitness, Oxygen Magazine and Mark's Daily Apple. He has a MA in psychology and plans to enroll in a Ph.D program in sports psychology. Jackson is currently a master’s competitor in powerlifting.