The reason we’re suggesting 45 minutes instead of the typical 30 as one of the ways to lose weight is that a Duke University study found that while 30 minutes of daily walking is enough to prevent weight gain in most relatively sedentary people, exercise beyond 30 minutes results in weight and fat loss. Burning an additional 300 calories a day with three miles of brisk walking (45 minutes should do it) could help you lose 30 pounds in a year without even changing how much you’re eating. Here are 20 hidden reasons your diet isn’t working.
While the Duke study found no added benefit to resistance training (aka weight or strength training) when it comes to belly fat, a 2014 study from a Harvard University team found otherwise. Twenty minutes of weights a day was linked to less of an increase in belly fat (particularly for older men). “Engaging in resistance training or, ideally, combining it with aerobic exercise could help older adults lessen abdominal fat while increasing or preserving muscle mass," said the paper’s lead author Rania Mekary.
中文: 快速减掉腹部脂肪(女性适用), Português: Perder a Gordura da Barriga Rápido (Mulheres), Deutsch: Fett am Bauch abnehmen (als Frau), Español: perder grasa abdominal rápidamente (mujeres), Italiano: Perdere Velocemente il Grasso Addominale (per Donne), Русский: быстро сжечь жир на животе (для женщин), Français: perdre du ventre rapidement pour les femmes, Nederlands: Snel vet van je buik kwijtraken (voor vrouwen), Bahasa Indonesia: Cepat Menghilangkan Lemak Perut (Wanita), Čeština: Jak rychle zhubnout tuk na břiše (pro ženy), العربية: خسارة دهون البطن بسرعة (للنساء), हिन्दी: पेट की चर्बी को तेज़ी से घटाएँ (महिलाओं के लिए), Tiếng Việt: Giảm Mỡ bụng Nhanh (dành cho Nữ giới)
Obese people who consumed a tablespoon or two of vinegar daily for eight weeks showed significant decreases in body fat—particularly visceral fat—according to a 2009 Japanese study. "One theory is that the acetic acid in the vinegar produces proteins that burn up fat," explains Pamela Peeke, M.D., professor of medicine at the University of Maryland, author of Fight Fat After 40.
Mason, A. E., Epel, E. S., Aschbacher, K., Lustig, R. H., Acree, M., Kristeller, J., … Daubenmier, J. (2016, May 1). Reduced reward-driven eating accounts for the impact of a mindfulness-based diet and exercise intervention on weight loss: Data from the SHINE randomized controlled trial. Appetite , 100, 86–93. Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4799744/
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.
Our increasingly slothful lifestyles are partly to blame for skyrocketing obesity rates, so it’s no surprise that being more active is a simple fix for belly fat. In 2003, a first-of-its-kind study from Duke University showed that sedentary adults accumulated abdominal fat surprisingly quickly — and that sedentary women stacked on fat more visceral fat than sedentary men, even though they added less fat overall.

This could be because the body increases insulin secretion in anticipation that sugar will appear in the blood. When this doesn’t happen, blood sugar drops and hunger increases. Whether this chain of events regularly takes place is somewhat unclear. Something odd happened when I tested Pepsi Max though, and there are well-designed studies showing increased insulin when using artificial sweeteners.


Lack of sleep doesn't just cause undereye bags, a grouchy mood, and an insane craving for coffee; studies on sleep continually show that a lack of sleep means a bigger appetite and BMI. For example, in a 2002 study of over one million people, scientists found a direct correlation between less sleep and a higher BMI for anything under seven hours/night. More recently, a 2016 study published in the journal SLEEP found that sleep-deprived people reported more hunger and had a harder time resisting unhealthy snacks—even when they had had a huge meal (that supplied 90 percent of their daily caloric intake) only two hours prior. The scientists said that sleep deprivation activated a similar system that's targeted by the active ingredient in marijuana and enhances the desire for food.
But again, there are very few solid studies that deem apple cider vinegar as a magical weight loss elixir. The drink can, however, be a decent addition to your routine if you’re already eating healthy and exercising frequently. Some research shows that people who sip on ACV may experience smaller blood sugar spikes after they eat, which can help you manage cravings. If you can stand the taste and want to try it, just be sure to dilute a tablespoon or two in 8 ounces of water, since ACV has a high acidity that can burn your throat and damage your teeth.
As you get older, your body changes how it gains and loses weight. Both men and women experience a declining metabolic rate, or the number of calories the body needs to function normally. On top of that, women have to deal with menopause. "If women gain weight after menopause, it's more likely to be in their bellies," says Michael Jensen, MD, professor of medicine in the Mayo Clinic's endocrinology division. In menopause, production of the hormones estrogen and progesterone slows down. Meanwhile, testosterone levels also start to drop, but at a slower rate. This shift in hormones causes women to hold onto weight in their bellies. The good news: you can fight this process. Read on.
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."

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.

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