Second of all, it gamifies things a little bit. It pits you against yourself in the sense that if you go out at maximum speed, again, performing a movement that you can safely perform at maximum speed in round 1, well, then you have something to compete against in round 2 and round 3. And that makes the high-intensity interval training, first of all, very intense, but also it makes it fun in a way that lets you forget just how painful the whole thing is.