Williams’ George Russell says his eyes were “fully bloodshot” after completing his first Formula 1 test, such were the strains on his body.
Russell graduated to Formula 1 last season, competing for the struggling Williams team.
The extremely slow FW42 left Russell fighting then team-mate Robert Kubica at the back, with the Briton finishing his first season as the only driver without a point.
Russell is regarded as one of the brightest prospects in the series though – he won the GP3 and F2 titles back-to-back before joining the Formula 1 ranks, just like Charles Leclerc did, and is a Mercedes junior driver.
But he has revealed just how much of a strain that first F1 test was on his body.
Speaking to BBC Sport, he said: “It was incredibly fast. It was honestly mind-blowing. I think the first time I drove I jumped from a Formula Three car to an F1 car and it was like my mind couldn’t keep up with the speed was the initial feeling.
“The braking, we’re going into a corner at 200 miles an hour and you’re braking 100 metres before the corner, which was just absolutely bonkers. And my eyes couldn’t keep up.
“Actually after my first-ever day in an F1 car my eyes were fully bloodshot and I think that was just from the forces. And that happened for the first three days I ever did, and the end of the day in my eyes were fully bloodshot.
“So it’s just incredible. Your body takes time to get used to those horses. I’m fully used to it now but it was mind-blowing.”