You've probably tried at least one. More than 70-million americans are currently on a diet, but there's a lot of myths out there.
1. Don't eat after 8 pm.
According to Temple University researcher Gary Foster, calories don't know what time it is. He says, "There's nothing magical or mysterious about when calories go into the body, how they process them. It's really about how much energy goes in over 24 hours and how much energy is burned over 24 hours."
2. Eat a big breakfast when you wake up to boost metabolism.
Dr. Foster says, "It tends to be a very small increase and a very short-lived one." However, you should eat a small breakfast and eat often enough so you don't overindulge.
3. Carbs make you fat.
It's calories that make you fat whether they are from carbs, fat or protein. You also don't get fiber from most processed carbs, like white instead of whole grain pasta, so you may not feel as full.
4. Ignore the scale.
Research shows people who weigh themselves daily do better at keeping the pounds off.
5. If you exercise, you can eat whatever you want.
You actually need to burn 3,500 calories to lose just one pound of fat.
However, Dr. Foster says, "It's important to note that exercise is the single best predictor of who keeps weight off and who doesn't."