Drivers regularly endure 120-degree cockpit temps and 5 to 10 pounds of sweat...

https://varimail.com/articles/the-physics-of-pain-g-forces-neck-strain-and-the-reality-of-driver-wellness/

Drivers regularly endure 120-degree cockpit temps and 5 to 10 pounds of sweat loss during a race. In this piece, we break down how professional racing recovery is evolving beyond old habits