Tim McGraw’s grueling workouts have become the stuff of country music legend, but it looks like the hitmaker’s impressive fitness routine could be catching up with him.

“I gotta cut short my workout,” Tim told The Blast as paparazzi caught up with him as he arrived at JFK Airport in New York City late Monday night. A day earlier, Tim briefly collapsed onstage in Ireland during his set at the Country to Country festival.

In clips from earlier in the show, McGraw, 50, showed no hint of the trouble to come. Reports on social media said he fell to his knees at the end of the song “Humble & Kind,” and had to be helped off stage.

Both Tim and wife Faith signed autographs and seemed in good spirits as they left the airport. Tim blamed “lots of flying and dehydration” for the scare, just as Faith did on Sunday when she returned to the stage to tell the crowd what had happened.

Faith Hill, one of the most successful country artists of all time and McGraw’s wife, was also performing at the event. She later reassured worried fans about McGraw’s condition.

“He’s been super dehydrated,” Hill said in a clip posted on an Instagram fan page. “I apologize, but I made the decision that he cannot come back out on stage.”

Fans cheered and chanted, “Get well, Tim!

McGraw, who has sold more than 80 million records worldwide and is best known for the hits “Just To See You Smile” and “Live Like You Were Dying,” has won three Grammys and a host of other accolades, including 11 CMA Awards. He and Hill have also recorded a number of duets, including the chart-topper “It’s Your Love.”

In addition, McGraw works as an actor, appearing in films such as “The Blind Side,” “Friday Night Lights” and “Tomorrowland.”

McGraw and Hill are currently scheduled to start another tour in late May.