The communication links between the Watch the phone and the Apple TV need some work. I would start up all three apps and get into the workout. If some notification comes in, I will lose the app on the watch. Also, the app tends to shut itself off on the watch and I never get a full workout summary with heart rate. Its a great idea but needs more work.
Stabledepiphany about BODi Fitness & Workout Planner, v2.0.1