Job Summary. F45 Training Tatum Ranch is hiring. What is F45 Training. Functional 45 Training delivers Innovation, Motivation and Results to our clients through 45 minute HIIT workouts. Our classes are unique, fun and highly addictive which is why F45 Training is currently the fastest growing network of fitness studios in The World. As an F45 instructor you will run industry leading group HIIT sessions. Our classes are 45 minutes long and deliver...