Taylor Swift is going to have to shake off some skepticism from Terry Bradshaw.

Swift has become fully immersed in NFL coverage in recent weeks, attending four of the last five Chiefs games to watch her boyfriend, Travis Kelce.

Bradshaw, the four-time Super Bowl champion, joined “The Herd” on FS1 and was asked Monday how Swift could possibly sing for three hours at her wildly popular concerts.

“Maybe you don’t,” Bradshaw said ominously.

“You cannot run around a stage and sing live [for three hours]. Nobody will probably admit that, but I do a show in Branson [Mo.], I do 20 shows at the Clay Cooper Theater and if I walk once all the way to the right side of the stage, I have to take a break.”

Bradshaw has only ever seen one other performer accomplish this mystical feat.

“The only person I’ve ever seen that can really do that was Freddie Mercury of Queen,” he continued.

“He would run everywhere, all live back then. Phenomenal, great breath control. And I’m sure Taylor and a lot of these really choreographed shows, a lot of that, they’re singing live to tape, so the tape’s going on and they’re singing and if something happens to the tape, then boom. I’m just guessing.”

Swift has been attending Chiefs games so frequently that she now has a secret handshake with Patrick Mahomes’ wife, Brittany.

There have been rumors that her relationship with Kelce is serious enough at this point that he will reportedly travel to Buenos Aires to check out the international leg of her “Eras” tour when the Chiefs have a bye in Week 10.

The couple spent last weekend together in New York, making a surprise appearance on “Saturday Night Live.”