A man suffered a heart attack while eating burger and fries at the Heart Attack Grill restaurant in Las Vegas over the weekend, according to authorities. Witnesses said that the man, who was in his 40s, was eating on one of Heart Attack Grill's notorious "Triple Bypass Burgers" when his symptoms started. "He was having the sweats and shaking," the New York Daily News quoted a waitress identified as "Nurse" Bridgett as telling local station KVUU. "The gentleman could barely talk," the joint's owner, Jon Basso said. "He was sweating, suffering." Basso called 911 and the man was rushed to a local hospital. He survived and was reportedly recovering, KVUU revealed. The Arizona-based chain caused a stir in Sin City when it opened in October because of its shameless glorification of fatty, high calorie food. Patients wear hospital gowns over their clothes and are served by waitresses in skimpy nurse's uniforms, who check diners' pulses before taking their drink order. Bypass burgers are served with "Flatliner Fries" cooked in lard washed down with butterfat milkshakes. A sign on the door says, "Caution! This establishment is bad for your health." Customers who weigh over 350 pounds eat free.