Another thing that messes with circadian rhythms? The blue light of digital devices. “We have seen increasing scientific evidence that the more you use devices, the higher your risk of obesity,” says Gillespie. The reason is twofold: One, the more time you spend in front of a screen, the less time you’re running around and playing. But also, experts believe, the blue light these devices emit can disrupt your internal clock. One study found that using a blue light-emitting device before bed delayed the release of melatonin, a hormone responsible for sleep, and the effect carried over to the following night as well.
If you’re actively watching your weight this season, know this: Research from the University of Chicago found that dieters lost 55% less fat when they slept for 5½ hours than when they slept for 8½ hours. To settle into slumber more easily, avoid lit screens, food and, yes, booze for a full two hours before bed, and fill your plate with foods that help you fall asleep earlier in the night (think cherries, jasmine rice, and bananas).
That said, a Medicine & Science in Sports & Exercise study found that runners lost more weight than walkers over a six-year period, possibly because of the afterburn effect. “Running at a high intensity will create an afterburn, which is when your body continues to burn calories when you’re no longer moving,” Rubin says. She suggests starting with three 30-minute runs a week, sprinting for 30 seconds then recovering for 30 seconds to a minute.
Research also shows that workouts involving high-intensity interval training (HIIT) can help reduce excess fat around your middle. Besides working your core, try incorporating a day or two of more vigorous exercise into your weekly schedule. (You can start with these three beginner routines.) Keep in mind that you can lower your total body fat percentage even by moving around more at work, according to another study.

There's a reason you've been hearing so much about cutting meat out of your diet lately. It's not just great for your body, but also a quick way to shed some extra pounds. "Consider swapping a few meat-centric meals each week for ones centered around vegetarian proteins — or give a full-fledged vegetarian diet a try if that's of interest to you," Gorin says. "Research shows eating a vegetarian diet may boost and speed up weight loss, resulting in a loss of up to 10 pounds." Gorin recommends topping a salad or filling a veggie taco with vegetarian protein sources like pulses — which are beans, chickpeas, lentils, and dried peas — to give your weight loss a boost. One study found eating ¾ cup of pulses daily led to a loss of close to a pound over about six weeks, versus people not eating pulses daily.


How to make perfect baked chicken: Season one chicken breast with salt and pepper on both sides. Heat 1 tablespoon coconut oil in a cast iron skillet over high heat. When it starts to smoke, remove pan from heat and add chicken to hot pan. Add pan back to flame, reducing heat to medium-high. Cook for 2-3 minutes without moving to sear the chicken. Flip breast over and cook uncovered for an additional 2-3 minutes. Place the entire pan into a 350˚F oven for 8 minutes. Remove from oven and let sit in pan for 2-3 minutes before serving.
Some studies have shown that a protein shake consumed immediately after training can produce up to 25 times higher levels of protein synthesis when compared to a protein shake that is consumed 3 hours post workout. This shows how important it is to get this shake in right away. Since timing is so important in the post workout state it is important to choose a protein that is quickly digested.
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.
Those trans fats on your menu are hiding out in plain sight and sabotaging your lean belly plans every time you eat them. If a food product says it contains partially hydrogenated oils, you’re eating trans fat, which can increase your risk of heart disease, high cholesterol, and obesity with every bite. In fact, research conducted at Wake Forest University reveals that monkeys whose diets contained eight percent trans fat upped their body fat by 7.2 percent over a six-year study, while those who ate monounsaturated fat gained just a fraction of that amount. Instead of letting harmful trans fat take up space on your menu, fill up with the 20 Healthy Fats to Make You Thin.
When you drink liquid carbs, like the sugar in soda, your body doesn't register them the same way as, say, a piece of bread, according to a review of studies published in Current Opinion in Clinical Nutrition & Metabolic Care. That means, even though you're taking in calories, your fullness cues aren't likely to signal that you're satisfied once you finish off a can. And that can lead to consuming more overall.
When a lot of insulin is released by the body consistently throughout the day, not only does it prevent fat loss, but it also encourages the body to store energy as body fat. The types of calories that spike insulin the most are those from carbohydrates in the form of simple sugar. So if you want to eat carbohydrates, stick to healthy carbohydrates from food that gets digested slowly. Along with carbohydrates, protein can also spike your insulin levels, especially those from dairy-based sources like skim milk and yogurt.
In a way, moderate-intensity physical activity is that "magic pill" a lot of people are looking for, because the health benefits go beyond keeping your waistline trim: Not only can it reduce your risk of cancer, stroke, diabetes and heart attacks, but studies have shown that physical activity can significantly improve the moods of patients with major depressive disorders.
Keeping a toothbrush handy can do more than polish up that smile (and counter the effects of all that belly-slimming garlic); brushing your teeth throughout the day can also help you ditch that belly fat fast. A study conducted a sample of over 14,000 participants found that brushing after every meal was linked to lower weight. That minty toothpaste flavor not only clashes with virtually every food, brushing may also trigger a Pavlovian response that tells your brain the kitchen’s closed.

1. Don’t starve yourself: Cortisol—that stress hormone that causes your body to store more fat—is elevated from circumstances of high stress, including extreme dieting, Seedman says. “If you start dropping calories excessively, your body goes into starvation mode and it becomes stressed. You’re in caloric deprivation, but that elevated cortisol causes you to gain body fat in your stomach—it’s a vicious cycle,” he adds.
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