Which is why you should never just look at calories.
600 calories of candy bars and 600 calories of steak looks a lot different. But will weigh about the same. From memory, that will be about 2 and a half Snickers, and one 8 ounce steak.
Trying to eat 600 calories of healthy green vegetables would see your jaw fall off before you finished chewing. About 6 heads of romaine lettuce to get you that far. Until you add dressing. Which, generally speaking, will have about 120 calories per ounce. A little more than a candy bar.