Considering consuming 350 to 500 calories at breakfast is a standard recommendation, this all sounds great! But where those calories come from is of equal importance, so they also asked registered dietitian Lisa D. Harkins what she thinks. "An Egg McMuffin is not the worst thing you can have," she explains. "It's much better than no breakfast, a doughnut, or a fatty, empty-calorie Dunkin' Donuts coffee drink." But she also goes on to note that at "750 milligrams per pop, you're getting somewhere between half and a third of your sodium content for the day, based on the U.S. Food and Drug Administration's recommendation of 1,500 to 2,300 milligrams." Which means the Egg McMuffin is a perfectly reasonable breakfast... so long as you don't have high blood pressure.