Whether you were too busy sleeping in, just not hungry or truly thought this was a good way to keep your weight in check, former breakfast skippers may have wreaked havoc on their metabolisms, too. Research shows skipping the morning meal slows resting metabolism and keeps our bodies from burning calories until lunchtime. A study in the Journal of the American College of Nutrition shows breakfast skippers have a higher body mass index (BMI).
Other research shows people who eat breakfast daily may be less likely to succumb to obesity and diabetes.
"You need breakfast to get your brain and body functioning," says Glassman. If you don't feed your body, it will only hold onto the fuel it has stored and will never budge a pound.
People who skip breakfast are also the type of people who tend to go without eating in general, Glassman tells WebMD. They're the same ones who go until 3 p.m. without lunch or tend to forget to eat all day and then feast on a large dinner.
These behaviors can destroy of the metabolism over time. Also, when you eat fewer foods throughout the day, you eat fewer types of foods and may miss out on vital nutrients, says Glassman. Skipping breakfast may result in a lack of an adequate store of vitamins and minerals as well as missing out on certain phytochemicals and antioxidants that help ward off disease.
Avoid the metabolism roller coaster by regularly downing a healthy breakfast. If you can't eat first thing in the morning, wait an hour or two for your stomach to settle, and then try half an English muffin with peanut butter or a container of yogurt.
If you once followed the grapefruit diet, the cabbage soup diet, or a few other not-so-nutrition-savvy plans, you may have this nutritional blunder in your diet repertoire.
But if you were a fad-diet groupie, have you put your health at risk?
"Fad diets aren't science-based and their goal is only weight loss, not long-term disease prevention or even day-to-day energy," says Sass. You also can feel too tired to exercise and irritable and moody during a fad diet.