Cat of obstruction

I aim to walk a certain distance/number of steps every day, and sometimes it gets late in the evening and I've not done as many as I'd like... so I do some marching on the spot whilst watching Now TV. I'm not quite sure why - but often Warren decides that exactly where I'm walking on the little rug is exactly where he needs to come and roll over for tummy rubs... which is adorable, but means I have to stop a lot for cuddles. We've hypothosised that my walking looks a bit like cat kneading and that's what draws him in, but we're not quite sure!