I've got one but DH won't let me leave it out (so I remember to get on it) as DS's toys are in front of the TV. But the exercises are easy to master (at least the game-type ones). the times I've gotten on it I've felt good doing them (and felt like I've done a workout after it). From memory it's won't help build strength (ie weight training) but will help with general fitness level. I remember asking about them last year when I was looking at buying one.