Hehe. It's a little guilty pleasure to start out slower than they run and gradually turn up the speed while they have to turn theirs down. It's only my personal observation, but it seems that fatties can start out quite fast for their mass, but lose stamina extremely quickly. They don't seem to know their personal performance curve (or any at all, but why am I wondering) and can't adjust their training to it. They then get off, change clothes, and when they come back, I'm still there with the same speed. Our treadmills are directly opposite of the counter, it's shitlording paradise.