New York Jets secondary defender Michael Carter II isn’t taking kindly to a grass-kicking joint study from the NFL and NFL Players Association.

The results of the study, obtained by NBC Sports and ESPN, seemed to dispel the theory that artificial playing surfaces like the one used at MetLife Stadium are more responsible for non-contact lower body injuries than natural grass fields. But the NBC report penned by Josh Alper says that “the committee found that the rate of injuries that occur in the lower extremities without contact from another player was 0.001 higher per 100 plays on turf than it was on grass.”

Carter, who just wrapped up his third season in green, challenged those on the study committee to play four periods at MetLife before drawing any conclusions.

“Need some of these people to go into MetLife and bounce off that turf for 3 hours and tell me how you feel after vs grass,” Carter said on X, quoting NBC’s coverage of the study and capping off his comment with a laughing emoji.