Originally Posted by slvoid

It's not the speed, it's the change in speed with respect to time that wears you out, such as the massive increases and decreases in speed in relatively short periods of time along with cornering an insane speeds in F1.
I thought this was a pretty fun figure to throw around:
"A mere 4 seconds is the amount of time it takes for a Formula One car to go from 300km/h to a complete halt. At 200 km/h, a Formula One contender requires just 2.9 seconds to stop completely, a process that will have been accomplished over 65 meters. At 100km/h, these values are just as mind-blowing: 1.4 seconds and 17 meters! Under these heavy braking periods, a driver is subjected to a horizontal deceleration of close to 5,2G."