Oops, I forgot to eat!

"Skipping meals might sound like an easy way to lose weight. But it rarely works because your body outsmarts your plan. Whenever you go long periods without fuel, your body protects itself by hoarding some of the calories for later use. You also risk getting a late-day energy slump, which leads to even more eating struggles."

Saving up calories

"Our bodies know how to manage fuel sources very efficiently. When you undereat during the day, your body believes it may not get enough food, so it conserves what does come in. Even if you eat the same total number of calories as usual, your body will store a portion of that large evening meal, causing her to gain weight." Linda Spangle