Einar Méndez, a Mexico-based father of three, was pronounced dead following the medical emergency in Mexico City on Friday, soon before he planned to visit New York for the first time, his wife, Yan, said Monday.

“Rest in peace, love of my life. Fly to the highest heights, and I promise we will meet again,” the heartbroken widow wrote on his Instagram.

An internationally renowned bodybuilder who coached celebrities has died after a “sudden heart attack” during a workout, his heartbroken widow announced.

“We are all still in shock. He left suddenly, at the gym, doing what he loved most: working out,” she wrote on Instagram.

“He was strong, resilient, kind,” she said in Spanish in a video shared online, according to People. “Everyone who knew him knows exactly who Einar Méndez was.”

Méndez boasted of being a national and international champion.

His dedicated clientele included Mexico-based Nicaraguan TV host Martha Debayle.

Debayle said Méndez had collapsed, but no official cause of death has been revealed.

The fitness influencer with nearly 47,000 followers was remembered as a family man and father.

“Before he was a coach, Einar was Yan’s husband, his wife for 30 years, a father to his three daughters. And that’s where today it becomes impossible to measure this loss,” Debayle said.

“To think about Yan and his daughters’ pain, breaks my heart,” she added. “Because no matter how much you try to find an explanation for them, there are things that just don’t have it.”

She also paid tribute to the trainer who helped more than just herself.

“Einar was my coach, but he was also the coach of so many of you in ‘Sumer Body,’ and I know that it meant to so many. I know how much they wanted it, how much he pushed them, how much he made them deny, laugh, strike and discover that they could always be a little more,’ she said.

Debayle revealed Méndez had future plans ready involving trip to the US where he would see the Miami Dolphins, visit New York for the first time and “keep training, scolding and demanding.”