In that age range, girls are just hitting puberty. It is a period of faster growth than any other time in their lives since infancy. Limiting calories is therefore not a good idea for girls in that age group, since their bodies need extra energy in order to grow, unless they are having health problems due to weight. Making healthy dietary choices and getting plenty of exercise are good ideas. Just keep in mind - the belly fat that many girls accumulate early in puberty tends to move elsewhere in their later teens.
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.
A 2012 study in the Journal of Functional Foods found that people who drank one and a half cups of green tea enriched with a total of 609 milligrams of catechins (a group of antioxidants that have been shown to help burn fat cells) every day for 12 weeks lost almost 16 times as much visceral fat as those who consumed green tea without the added antioxidants. To achieve similar results with store-bought green tea, you’ll need to brew two to four cups daily (many varieties can contain 160 to 470 milligrams of catechins per cup).
People with chronically high levels of the stress hormone cortisol tend to carry excess visceral fat. Foods that are high on the glycemic index (GI), which uses a ranking system of 0 to 100, cause more rapid spikes in your blood sugar, in turn triggering the release of cortisol when glucose levels crash. The constant up and down of your blood sugar levels can also lead to insulin resistance — the first step on the road to type 2 diabetes. To help keep cortisol levels stable, choose low-GI foods (with a rating of 55 or less) like beans, lentils, and chickpeas, instead of high-GI options like white rice and potatoes. To find the GI rating of your foods, use the University of Sydney’s database at glycemicindex.com.
Fishing around for the perfect protein? Salmon is a good place to start. It’s full of healthy fats, and, when combined with regular exercise, can support even greater fat loss, according to research published in the American Journal of Clinical Nutrition. “Salmon’s great because it has omega-3 fatty acids and is a good source of protein. It’s a little higher in fat than other protein options, but it’s the good kind of fat that we need in our diet. I see a lot of athletes that don’t incorporate any fat in their diets and are afraid to eat fat, but this is a good fat to have. Per ounce you get about 7g of protein, so if you’re an average male who’s going to consume around 5oz it can add up to 35g of protein per serving,” says White. Opt for wild salmon vs. farmed varieties, as it tends to contain higher amounts of healthy omega’s and less of the inflammation-causing omega-6 fatty acids.
The 2003 research indicated that exercise is a top weapon against visceral fat, backed up by a 2011 study which found that aerobic exercise is basically a magic bullet. Aerobic exercise is known to most people as cardio — activities such as running and cycling, as opposed to resistance training (where you lift heavy stuff around). While participants in the study worked fairly hard (jogging 20km per week at a high intensity), the researchers said lower-intensity but longer workouts should have similar benefits.
To banish stubborn belly fat, you have to ramp up your workouts. In a study published in the journal Medicine and Science in Sports and Exercise, people who completed a high-intensity workout regimen lost more belly fat than those who followed a low-intensity plan. (In fact, the low-intensity exercises experienced no significant changes at all.) "You need to exercise at full intensity because the end goal is to burn more calories, and high intensity exercise does just that," says Natalie Jill, a San Diego, Calif.-based certified personal trainer. High intensity workouts mean you're going all out for as long as you can. If this sounds intimidating, think of it this way: you'll burn more calories in less time.
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.
“It can take 12 minutes or longer for the signal that you’ve started to eat to make its way to your brain,” says Mark S. Gold, M.D., of the McKnight Brain Institute at the University of Florida. Quick tips: Sip some water between every bite of food you eat, or at least eat more meals with friends or family members. You’ll be more likely to talk and therefore to eat more slowly.
The fact of the matter is battling the bulge takes different strategies and approaches depending upon your genetics, your metabolism, your willpower, etc. What works for your buddy won’t necessarily be your be-all and end-all solution. To simplify things, we compiled plenty of tips to help rev your metabolism, lose your love handles, and unsheathe your abs. You’ll have to do some trial and error to deduce which ones work best for you (hey, losing weight is hard work). But if you put in the work (aka incorporate a few of these tips each week), you’ll be well on your way to a smaller waistline. Who said your glory days were in the past?
Noam Tamir, C.S.C.S, founder of TS Fitness, also says that metabolic resistance training and high-intensity interval training is a solid way to reduce fat all over, including belly fat. “These [types of exercise] help to burn calories during the workout, and they also give you that after-burn effect,” he says. “Plus, they help to change your body composition by increasing your muscle mass.”