SOURCES: WebMD Feature: "With Fruits and Veggies, More Matters." 2005 U.S. Dietary Guidelines. Elizabeth Ward, MS, RD, author, The Pocket Idiot's Guide to the New Food Pyramids. Elaine Magee, MPH, RD,author, Comfort Food Makeovers. Brian Wansink, PhD, professor and director, Cornell Food and Brand Lab, Ithaca, N.Y.; author, Mindless Eating. Barbara Rolls, PhD, professor of nutritional sciences; and director, laboratory for the study of human ingestive behaviors, Penn State University; and author, The Volumetrics Eating Plan.
The secret to a slimmer stomach in no time? A whole lot of fiber in your diet. Although many people are loath to add carbs to their diet when they’re trying to lose weight, adding the right, fiber-rich ones can have inches off your belly in a hurry. In fact, researchers at Wake Forest Baptist Medical Center found that every 10-gram daily increase in soluble fiber was associated with a 3.7 percent decrease in dangerous visceral fat over five years. Those who were active got even leaner, shaving off twice that much fat in the same amount of time. To start ditching that extra belly fat today, add the 30 Best Foods For Fiber to your menu!
Do more HIIT: High intensity interval training (HIIT) is as close to a magic pill as we have (except it involves a whole lot more work than just swallowing a capsule—sorry). Not only does it surge your body to max intensity during the workout, but because you’re working so hard, your body can’t deliver enough oxygen in the moment, explains personal trainer Jeremey DuVall. Your muscles accumulate a “debt” of oxygen that then has to be repaid post-workout. This throws your body into a phase of fat burning for hours after you’re done sweating, known as post-exercise oxygen consumption, or EPOC. Plus, super intense circuits like this activate muscle-building hormones like growth hormone and IGF-1, he adds.
Fat metabolism is the most efficient way to produce energy, allowing you to go and go and go without burning through a ton of calories. But efficiency is the enemy of fat loss. To lose body fat, you want to churn through calories—calories from carbs, calories from fat, calories from anything—and you get there through carb metabolism. “The more energy-demanding the work, the more likely you are to lose body fat,” Zimmerman explains.
The scale is not necessarily your friend. You may want to lose fat – but the scale measures muscles, bone and internal organs as well. Gaining muscle is a good thing. Thus weight or BMI are imperfect ways to measure your progress. This is especially true if you’re just coming off a long period of semi-starvation (calorie counting), as your body may want to restore lost muscles etc. Starting weight training and gaining muscle can also hide your fat loss.
When Johns Hopkins researchers compared the effects on the heart of losing weight through a low-carbohydrate diet versus a low-fat diet for six months—each containing the same amount of calories—those on a low-carb diet lost an average of 10 pounds more than those on a low-fat diet—28.9 pounds versus 18.7 pounds. An extra benefit of the low-carb diet is that it produced a higher quality of weight loss, Stewart says. With weight loss, fat is reduced, but there is also often a loss of lean tissue (muscle), which is not desirable. On both diets, there was a loss of about 2 to 3 pounds of good lean tissue along with the fat, which means that the fat loss percentage was much higher on the low-carb diet.
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Also some research shows that the human body is primed to consume most of its calories during daylight hours. But the lifestyle is problematic for many: Because family meals and dinners with friends often are scheduled for after sunset, "people who try to stop eating after 7pm can’t do it every day for the rest of their lives," says Dr. Seltzer, who supports an alternative strategy: Eating a hearty meal at your regular dinnertime.
Sure, high-intensity cardio can help you torch calories, but ideally, you’ll also need to pump some iron to build metabolism-boosting muscle. That’s because strength training is one of the few activities you can do to spike the amount of calories you burn, even after you’re done with your workout. Case in point: one 2012 review of research found that while completing a 20-minute resistance training circuit may help you burn 200 calories, your body’s resting metabolic rate stays elevated for the next hour, helping you burn an additional 50 calories. Plus, when you lose weight, you lose some muscle with it, so building and maintaining that lean mass will help you achieve a more toned look.
Carbs. Carbs cause insulin release which, as we now know, is a double edged sword. The important thing is to consume carbs at times of the day where they will be most useful and will be less likely to inhibit fat loss. The three times of the day where carbs must be consumed are the pre-training meal, post-training shake, and the post-training meal. Here is how you should distribute your carbs among these meals.
Routinely squeaking by on five hours or less per night increases visceral fat levels, according to a 2010 Wake Forest University study. What’s more, after analyzing 28 different studies, UK researchers found that people who slept 5.5 hours or less per night ate an extra 385 calories the day after compared to those who snoozed for at least 7 to 12 hours. On top of that, they preferred to munch on fatty foods full of empty calories, like chips.
To prep his patients for success, Dr. Seltzer tells them to plan around a large evening meal by eating a lighter breakfast and lunch—NBD since most people who eat a meal before bed tend to wake up feeling relatively full, he says. Research suggests balanced bedtime meals may also promote steady next-day blood sugar levels, which also helps with appetite regulation.