Eat Breakfast Every Day. One habit that's common to many people who have lost weight and kept it off is eating breakfast every day. "Many people think skipping breakfast is a great way to cut calories, but they usually end up eating more throughout the day, says Elizabeth Ward, MS, RD, author of The Pocket Idiot's Guide to the New Food Pyramids. "Studies show people who eat breakfast have lower BMIs than breakfast-skippers and perform better, whether at school or in the boardroom." Try a bowl of whole-grain cereal topped with fruit and low-fat dairy for a quick and nutritious start to your day.
Saturated fats in food will pack on more visceral fat than polyunsaturated ones, according to a 2014 Swedish study. When subjects ate 750 more calories daily for seven weeks, either in the form of palm oil (saturated) or sunflower oil (polyunsaturated), the former gained more visceral fat while the latter gained more muscle mass and less body fat. The study authors believe different fat types can impact both the way your body forms fat and stores it. What’s more, including healthy fats in your meals can make them more satiating and keeps hunger at bay.
3. Exercise Ball Crunch: This is one of the most effective ways to strengthen and flatten abs.  Studies show this exercise is 40% more effective than regular ab crunches as it targets smaller muscles for flat toned abs including the oblique’s for a small waist and the outermost muscles that your typical ab crunch may miss.  To begin, lie down on the ball positioning it under the lower back.  Place arms behind your head.  Tighten your abs as you lift your torso off the ball while keeping the ball stable.  Lower back down and repeat 15 times with 1-3 sets.
A healthy GI tract is teeming with beneficial bacteria, and scientists are uncovering just how important those microbes are for keeping your weight under control. They’ve discovered that the strains of bacteria in the guts of thin people differ from those in obese folks, and there’s evidence that certain types of probiotics may help aid weight loss by assisting with the regulation of appetite, fat storage, and other related metabolic functions. You can get probiotics from live culture yogurt and certain supplements. While popping a pill or eating yogurt won’t magically shrink your waist, warns Ginger Hultin, RD, gut health is important. Read more about the weight loss benefits of probiotics.
Carbohydrates are essential to keeping a fast metabolism. Leptin and other fat burning hormones are directly related to carbohydrate intake and body fat levels. Leptin is a fat burning hormone that serves many functions. One of the most important functions is the control of energy expenditure. When food intake, and most notably carb intake is high, leptin levels will be high. This sends signals to you body that it is in a fed state and this can cause your metabolism to remain high.
Cancer, a very common and sometimes fatal cause of unexplained (idiopathic) weight loss. About one-third of unintentional weight loss cases are secondary to malignancy. Cancers to suspect in patients with unexplained weight loss include gastrointestinal, prostate, hepatobiliary (hepatocellular carcinoma, pancreatic cancer), ovarian, hematologic or lung malignancies.

“Poor sleep quality or quantity can make it difficult to lose or even maintain your weight,” says Darria Long Gillespie, MD, a clinical assistant professor of emergency medicine at The University of Tennessee. When you are sleep deprived, your body becomes less sensitive to the effects of leptin, the hormone that usually signals that you’ve had enough to eat. At the same time, the amount of the hunger hormone, ghrelin, increases, so you want to eat more. Together, it’s a recipe for overeating.

The prevailing formula for a long time on how much fat you’re going to burn was calories in minus calories out, based on your basal metabolic rate (BMR) and exercise efforts, explains strength and performance specialist Joel Seedman, Ph.D., owner of Advanced Human Performance in Atlanta. But with all the different biochemical reactions in the body, hormonal response, and endocrine function, there are an infinite number of factors that can affect how your body is storing and breaking down calories.
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