SuperSaquon Barkley doesn’t do kryptonite.

There he was on Wednesday morning, No. 26, a medical marvel making a mockery of modern science, on the practice field stretching and jogging and cutting lightly and sprinting — just 10 days after he went down — as if laughing at the audacity of his high ankle sprain’s diabolical designs on his season.

Half man, half amazing.

A sight for sore Giants eyes indeed, and an uplifting one at that.

“He’s a freak animal. I’m not surprised that he’s gonna be back earlier than projected,” center Jon Halapio said.

The initial prognosis: six to eight weeks.

“That’s just crazy. … I think his body is just made in the lab, I don’t know,” tight end Evan Engram said. “I’m glad everything’s coming along recovery-wise, and now it’s just being smart with it and not trying to rush anything.”

Barkley is in a rush to return.

The Giants should not rush him back.

Coach Pat Shurmur would not rule out Barkley for Sunday’s Vikings game, but consider that competitive advantage “coach speak.”

“Some people’s doctors had him eight weeks. Not my doctors,” Shurmur said.

His doctors would be wise to err on the side of caution and target a return for the Cardinals on Oct. 20.

I trust that senior vice president of medical services Ronnie Barnes will keep Barkley out of harm’s way until he is deemed ready by someone other than Barkley.

Barkley, being Barkley, seems driven to change into his cape and fly back ASAP to assist Daniel Jones.

“I know he’s been doing well, but he’ll be patient with it,” Jones said, “and we certainly want him to. He’s a leader, he’s a captain on our team, so to have him back out there is definitely good for us.”

Everyone who knows Barkley knows it would be folly to so much as count him out of next Thursday night’s game at New England.

“Saquon amazes everybody in everything he does, so are you really surprised that he’s coming back so fast?” linebacker Oshane Ximines said.

Cornerback Grant Haley knows Barkley. They were together at Penn State when Barkley missed just two games with a high ankle sprain then returned with a vengeance against Ohio State.

“Just a lot of hard work, and genetics as well, so that always helps,” Haley said.

Wayne Gallman showed he was a quality backup against the Redskins, but Barkley is arguably the best running back in the NFL.

“Everybody’s always talked about how much of a freak he is and how athletic he is,” guard Will Hernandez said. “That goes and carries over to the healing process. He’s healed a lot faster than a lot of guys have in the past, so that’s pretty cool, and we’re happy to have him back, the sooner the better.”

Receiver Sterling Shepard was surprised to see Barkley on the field but not surprised because of the essence of the man.

“It’s like, ‘Dang, how’s he doing that?’ because I’ve had ankle injuries before, they’re no joke,” Shepard said. “It’s tough to do the stuff that he’s doing already. People handle pain differently.”

Safety Antoine Bethea can recognize a warrior when he sees one.

“I had a high ankle sprain early in my career, and I didn’t miss any games,” Bethea said. “I think you gotta look at it person by person.”

With a person such as SuperSaquon, you gotta look at it game by game.

But don’t be in any rush to rush him back.