I have been using the Human Trainer since 2011, and it has massively improved my shoulder mobility, stability, and definition! Using the Human Trainer for rear deltoids work improved my posture too. I also discovered some of exercise or movement patterns that are new yet challenging such as suspended leg hip lifts and push up. Having something to get better is always motivating. To anyone considering purchasing the Human Trainer, I would simple say "Get it!" It's a complete portable gym that you can take it anywhere and progress safely using only your bodyweight. It's an awesome, useful and cool! You can do lots of exercise with it anywhere that you can hook it safely either you just starting out your physical training or looking for advance stuff! You also can add on the Human Trainer moves with your current training program or tools.