A major factor in Nascar racing is keeping up with the physical demands and challenges of staying cool. Sometimes it doesn't go so well. Last September at the race in Richmond, Virginia, six-time champion Jimmie Johnson felt that first hand.
"The fans that circulate air inside the race car stopped working. I thought I was fine though, but I was climbing out of the car, I felt cramps everywhere." Johnson thought he could manage it by lying down on the ground. He spoke with CNBC on Wednesday.
"That only made it worse, so I tried to stand up, but I got lightheaded—and I saw the tunnel." In his fall, he aimed for a crew member who was still kneeling on the ground, "so I didn't split my face open." After a 15-second blackout, Johnson was taken by a golf cart to the infield care center, where he was treated and released.
Johnson is a triathlete, trains year-round and thought he was fine—and yet he still passed out.