Nascar

Danica Patrick's CrossFit session literally leaves a mark

FORT WORTH, TEXAS - APRIL 08: Danica Patrick, driver of the #10 Nature's Bakery Chevrolet, stands on the grid during qualifying for the NASCAR Sprint Cup Series Duck Commander 500 at Texas Motor Speedway on April 8, 2016 in Fort Worth, Texas. (Photo by Sarah Crabill/Getty Images for Texas Motor Speedway)

FORT WORTH, TEXAS - APRIL 08: Danica Patrick, driver of the #10 Nature's Bakery Chevrolet, stands on the grid during qualifying for the NASCAR Sprint Cup Series Duck Commander 500 at Texas Motor Speedway on April 8, 2016 in Fort Worth, Texas. (Photo by Sarah Crabill/Getty Images for Texas Motor Speedway)

If you've ever heard the phrase, "Ooh, that's going to leave a mark!" then you can empathize with NASCAR Sprint Cup Series driver Danica Patrick.

Patrick, like many of her peers in NASCAR's top division, is fanatical about fitness and nutrition. You have to be in such a highly competitive sport.

Well, apparently her enthusiasm left a mark -- several of them, actually -- earlier this week during a CrossFit session.

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We admire her dedication.

And the photo Patrick posted on Instragam is irrefutable proof that when it comes to being in the best shape possible, the struggle is real.