After eleven years on the circuit, I have seen how demanding a race weekend is...

https://www.bookmark-suggest.win/the-era-of-toughing-out-race-weekends-is-ending-drivers-and-crews-now-treat

After eleven years on the circuit, I have seen how demanding a race weekend is on the body. Drivers face 120-degree cockpit temperatures and five to ten pounds of sweat loss during a single event