Taking Niko with us when we go rollerblading is a great workout for him. He can keep up with us when we skate. And when we feel a little lazy and slow down, Niko would run ahead and pull us to help us out. When he is pulling, we chant "mush, mush!" It is a lot of fun and we shorten the leash when other people are around. We get lots of comments and smiles.