The most common mistake you're probably making when doing abs work is jumping in without limbering up, causing you to do most of the work with your hips and back. See, your core muscles are harder to activate when the areas surrounding it are still tense. Try this: Before doing a single crunch, put a foam roller in the center of your back at the edge of your shoulder blades and stretch back over the roller, arms up. Repeat until the middle part of your back, which tends to get pulled the most during improper abs work, feels loose.
A reasonable daily diet for an adult is 2,000 food calories. That's 8.36 megajoules per day, or about 100 joules per second -- in other words, 100 watts. Most of that ends up as heat, so you warm a room as much as a bright light bulb. Cut your consumption by 600 calories per day and you'll lose a pound of fat every week. Most diet experts consider that a reasonable goal. Don't drop below 1,000 calories per day, or you might get lethargic. But at 1,400 calories per day, you can easily maintain an active life.
On the face of it, skipping meals seems like a path to losing weight — if you don’t eat as much, you’ll drop fat. But in practise, it doesn’t work out like that. A 2015 study from Ohio State University found that skipping meals messes up your metabolism and your hormones (specifically insulin), which results in an increased likelihood of abdominal weight gain. Researchers recommended eating several small meals throughout the day as opposed to one or two big ones.
Unsurprisingly, the results showed that nothing had happened to the weight of the women receiving calcium or the placebo. However, the group which took the multivitamin lost more weight – about 3 kg more – and improved their health markers. Among other things, their basal metabolic rate (the rate at which the body burns calories when at rest) increased.

And maybe a new mattress, because it’s not just the amount of time you spend sleeping that keeps you lean, it’s also the quality of your sleep. Fat cells in your body produce a hormone called leptin that helps the body keep track of how much potential energy (i.e. fat) it has stored. But leptin is only produced during certain stages of sleep. Miss out on those stages because you’re not resting soundly enough, and you’ll disturb levels of the hormone, leaving your body with no real idea of its energy reserves. Consequently, you’ll end up storing calories rather than burning them.

Potassium, magnesium, and calcium can help to serve as a counter-balance for sodium. Foods that are rich in potassium include leafy greens, most "orange" foods (oranges, sweet potatoes, carrots, melon) bananas, tomatoes, and cruciferous veggies — especially cauliflower. Low-fat dairy, plus nuts, and seeds can also help give you a bloat-busting boost. They've also been linked to a whole host of additional health benefits, such as lowering blood pressure, controlling blood sugar, and reducing risk of chronic disease overall.
The body doesn't react to all fats in the same way. Research correlates high intake of saturated fat (the kind in meat and dairy) to increased visceral fat, says Patton. On the other hand, monounsaturated fats (the kind in olive oil and avocados) and specific types of polyunsaturated fats (mainly omega-3s, found in walnuts, sunflower seeds, and fatty fish like salmon) have anti-inflammatory effects in the body, and if eaten in proper portions may do your body good. But Patton warns that eating too much fat of any kind increases your calorie intake and could lead to weight gain, so enjoy healthy fats in moderation. 
Having a larger waist circumference is a better indicator of health problems than commonly used measurements like body-mass index (BMI), according to a growing body of research. Specifically, having a waist size higher than 40 inches around for men or 34.5 inches for women is correlated with a higher risk for developing type 2 diabetes and heart attack. There's even evidence that having more belly fat is correlated with lower cognitive performance.
Swap giant dinner plates, bowls, and silverware for smaller versions, and pick up portion-sized packages of snacks instead of nomming straight from a full-size box or bag, says Cerderquist. You'll be eating less without even thinking about it. Another pro tip: stay away from protein bars. "It is amazing to see that an entire well-balanced meal can have the same amount of calories as many protein bars," she says. "But you are much more satisfied when having the variety of textures and flavors from a real meal."
Want to lose that belly fat? In your dreams! Seriously, though: a good night’s sleep is one of the best ways to get rid of that extra fat around your waist for good. Among the 60,000 women participating in the Nurses’ Health Study, those who snoozed for fewer than five hours a night were at the greatest risk of becoming obese and gaining 30 or more pounds over the course of the 16-year study period when compared to those who slept for seven or more hours.
Sometimes, to whip your body into shape, you have to get a little nutty. While nuts are high in fat, it’s that very fat that makes them such powerful weapons in the war against a ballooning belly. In fact, research from Reina Sofia University Hospital reveals that study participants who consumed a diet rich in monounsaturated fats, like those in nuts, over a 28-day period gained less belly fat than their saturated fat-consuming counterparts while improving their insulin sensitivity.