Due to his history with concussions in professional wrestling, the WWE must be very careful with current champion Daniel Bryan. Bryan was sidelined for over a year, with the initial belief that he’d never wrestle for WWE again. Doctors told Bryan that he should hang up his professional wrestling boots for good. However, after seeking several second opinions around the country, the door for Bryan to get back in the ring opened again.

Finally, Bryan was cleared to return early last year. Now, he is once again WWE Champion and feuding with AJ Styles on SmackDown Live. Bryan will defend his title tomorrow (Sun. January 27, 2019) at the Royal Rumble pay-per-view against “The Phenomenal One.” He spoke to ESPN recently to promote the event and discussed his medical condition under WWE. Bryan detailed the process he must go through each and every time he participates in any sort of physicality.

First, WWE doctors check his eyes. Then, Bryan takes part in a series of balance tests. Lastly, Bryan is given a mathematical equation to solve. It’s nothing too extensive, but complicated enough to force his wheels to turn. Given Bryan has suffered 10 documented concussions throughout his career, it’s a fair process to continue to allow him to wrestle:

“The big concern with concussions is that, this has happened to me in the past, you don’t know you had a concussion and your instinct as an athlete is to say, ‘Hey, I’m fine,'” Bryan said. “What we do now ensures that doesn’t happen.”