 So basically what it is, is I always realise that, or I always notice that when someone is strong, but also has a really good 5K time, they're an absolute beast. You know, I see them as, you know, you're fit, you're a real hybrid athlete, as we call it. And I thought, right, the infamous training system for a 5K is 12 times 400 metres. So you do 12 400 metre best efforts with like a minute rest in between.