Only started this on Monday, I have a sit-down job and I haven't been able to do my usual exercise (swimming) due to some neck pain, anyway I bought this with the intention of getting some better resistence into my workouts to go alongside the cardio. I've also been suffering with slight lower back pain due to bad posture.
I'm only on World 3 and haven't over-exherted myself due to the back pain, anyway, by day 3 I no longer suffer with back pain, the ring, this game, the leg strap, everything is the real deal. I've tried aerobic exercises before in front of the TV and it's too boring and there's no proper engagement or reason to exercise, this gives you a reason to carry out the reps and sets, you get constant feedback and are totally engaged, whether it's with the campaign, the minigames, the sets etc. and this imo is why it stands out, oh btw I don't like RPGs, but I love this, they nailed it when they went with the RPG format.
It gives you some great stretching exercises before and after and due to my bad posture I carry out a posture set on there and it sorts me out from any pain etc.
This is, by far, the most engaging workout I've done, and I can see myself sticking to this religiously, it's really fun and I know it's going to get harder and by the time it does I think I will be ready for that, in fact I'm looking forward to it.
Also, this is coming from someone who scoffed when I first saw the "ring" reveal (without the game).