From 120-degree cockpits to losing 5 to 10 pounds of sweat, professional racing...

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

From 120-degree cockpits to losing 5 to 10 pounds of sweat, professional racing demands a heavy physical toll. We are finally moving past the era of pure grit