 That's quite mind-blowing. And that happens every single month. Every single month. So literally it's pretty much potluck for a woman in the sense of when the dates are announced for this is when your race is going to be. And if it's, say, somewhere like Paris in the heat waves, already there's going to be a bit of a disadvantage there if it falls on the wrong side of the cycle for you based upon your core temperature. Potentially, yes.