I started with GMB’s Mobility to try it out. Within a month later I purchased their bundle because I enjoyed the Mobility program so much I wanted to fully immerse myself with GMB! I started GMB about 2 years ago and have made huge improvements in my mobility and skills! I have had many back injuries and have been diagnosed with osteoarthritis. I’ve also struggled with Chronic Fatigue Syndrome for many years. It’s very difficult to find a fitness program that doesn’t flare up my CFS, as any exertion causes post exertion malaise. What works for me about GMB is the fact that you can choose between a 15 minute, 30 minute, and 45 minute session. With my CFS I can typically only do 15 minute sessions but still feel like I got a good workout! I have never found another program that doesn’t cause extreme flare ups with me because they’re all too long, too intense, &/or too much volume. Before starting GMB my squat depth was very high and my posture was horrible (due to my past injuries and OA). After about a year of consistent GMB sessions, my squat depth is very low with good posture! I never thought I would improve my squats, let alone get a$$ too grass!! I have 9 GMB courses and so far my favourites are: Mobility. Elements. Integral strength. Recovery! If you’re just getting started and just want to start moving I’d recommend starting with Mobility. But any and all GMB courses are fantastic and I’d highly recommend giving it a try! If a 45 year old man with 4 diseases can do it, why not try it?!