You may enjoy eating fast food, but you probably don’t know the fast food company’s secrets. You might just think twice about that fast food run after you hear the way you’re secretly tricked by some companies. Whilst everyone realizes fast food isn’t exactly the healthiest thing, you might be surprised about these secrets and the studies to back them up.

Featuring… How to get it at its freshest – If you’ve ever wondered what makes fast food, well, fast, we have an answer. These restaurants prepare for busy times by having a lot of hot food ready for the peak hours, like rush hour, when everyone gets off work and rushes to the nearest drive-through for dinner. French Fries Are More Than Potatoes, Salt, and Oil – You could just skip the fries altogether. Wait, what? Skip the goodness of fried potatoes? Yes, because in reality McDonald’s fries contain NINETEEN ingredients, according to Mythbusters’ Grant Imahara, who got a behind-the-scenes look at McDonald’s fry production. Only about half of your nugget is actually chicken…You may love chicken nuggets, but do you know what’s in them? Most people would say “chicken and breading.” Soda Machines Are Bacteria Ridden – When stopping in at your local fast food place for a quick burger and fries, you probably enjoy a nice, cold beverage from their soda fountain. Don’t Be First Through the Doors – On the other hand, if you arrive first thing in the morning, your meal may be a little TOO clean. According to Dr. Oz, most restaurants clean with strong chemicals when they close at night, and these can linger the next morning on drink machines and other cooking utensils or machines. Food sources are rarely inspected – You may think the FDA is staying on top of food safety in every local restaurant, but they’re a busy agency and can’t be everywhere all the time. Even the “healthy” fast food places really aren’t – Maybe you think you’re choosing the “healthy” fast food by going to Subway instead of McDonald’s—but not so fast. But if you do go to Subway, at least save some money – If you still want to go to Subway, here’s something else they may not want you to know. When you order two six-inch subs—say, one for you and one for a friend—it’s much cheaper to order a footlong and customize each half. Fast food junk is bad for the brain, causing you to do poorly on cognitive function tests – Okay, you know fast food isn’t healthy, but did you know it’s as bad for your brain as well as your waistline? McDonald’s burgers look the same 20 years later – If you’ve ever wished you could savor your burger even longer, you may have been on to something. A Utah man named David Whipple bought a hamburger from McDonald’s in 1999, and decided to save it for a few weeks to see what it looked like. Fast Food Today is Worse for you than it was 30 years ago – While that one burger may not change in appearance for years, there have been changes in just how unhealthy fast food is over the years. The Sugar Content is Colossal – In the United States, the recommended daily sugar intake is about 9 teaspoons for men and 6 teaspoons for women. A strawberry milkshake from McDonald’s contains about 20 teaspoons. Good Gravy – If you enjoy the gravy at KFC, you may be surprised to learn it’s older than you think. Wasteful Fast Food Restaurants – Of course, not every fast food place is so focused on saving money, er, conscientious about recycling its food. The Grill Marks on Meat May Be Fake – You may find your mouth watering when you see a hamburger ad with those freshly-seared grill marks on the meat.