Move more and faster. Research shows high intensity interval training (where you go all out for 30 to 60 seconds, slowing down for a couple of minutes, and repeating) coupled with strength training is an excellent way to make new, improved mitochondria. Strength training builds muscle and creates more mitochondria, while interval training improves mitochondrial function and how quickly they burn oxygen and calories. You can learn more about an effective exercise plan here.
Noshing throughout the day is a proven strategy to help you curb hunger and eat fewer calories overall. Now, experts are promoting nibbling versus gorging as a way to keep metabolism running by holding blood sugar levels steady and preventing weight-gain-promoting insulin spikes. Enjoying six small meals a day should do the trick; keep them around 300 calories each, or divide your usual day's calories by six.
Dried goji berries might be a staple of every health food store, but it’s worth looking for them a couple aisles over in the tea section. Lycium barbarum, the plant from which goji berries are harvested, is a traditional Asian therapy for diabetes and other diseases, but it also boasts a slimming effect. In a study published in the Journal of the American College of Nutrition, participants were either given a single dose of L. barbarum or a placebo after a meal. The researchers found that one hour after the dose, the goji group was burning calories at a rate 10 percent higher than the placebo group, and the effects lasted up to four hours. Bonus: Most goji teas are mixed with green tea, further boosting your calorie burn.
Load up on low-fat dairy: Women who consumed milk, yogurt, and cheese three to four times a day lost 70 percent more body fat than women who didn't eat dairy in a study published in the January 2003 American Society for Nutritional Sciences Journal of Nutrition. The reason: Calcium, along with other substances in dairy, actually revs up your metabolism, telling your body to burn excess fat faster, according to study author Michael Zemel, Ph.D., director of the Nutrition Institute at the University of Tennessee in Knoxville. And no, fortified o.j. won't do the trick. The best results come from dairy products instead of from other calcium-rich foods (like broccoli), calcium-fortified products (such as orange juice) or supplements. Women reap the largest fat-burning benefit when they consume three servings of dairy and 1,200 milligrams of calcium a day, Zemel's research shows.
Most of us choose one time of day to get our exercise in—whether that’s first thing in the morning or right after work. Though having a routine is helpful, Katherine suggests incorporating physical activity into both morning and night. For example, if you typically only exercise in the morning, then do a little something in the afternoon or early evening to bring the heart rate back up for a bit. “Evening exercisers can do the same thing in the morning,” she says. “Ten to 15 minutes of some activity in the morning will jump-start your metabolism for the day and will do a world of good.”
According to a study in the Journal of Applied Physiology, strength training increases your resting metabolic rate, so you burn calories even when you're not working out. When it comes to strength training, doing compound exercises is one of the most effective ways to work several muscles at once and save time at the gym. Compound movements like a weighted squat to a shoulder press or a reverse lunge to a bicep curl will work multiple muscle groups, so you get more bang for your buck.
Aim for a breakfast that has plenty of high-fiber carbs: When researchers at the University of Sydney in Australia compared the effects of high-fat and high-fiber-carbohydrate breakfasts, they discovered that people who ate the fatty meal got hungry sooner afterward. "High-fiber carbohydrates take longer for your body to digest and absorb than fats; thus they don't cause rapid changes in your blood sugar, so your hunger is kept at bay longer," says study coauthor Susanna Holt, Ph.D. Some good choices: a bran-rich breakfast cereal with low-fat milk; whole-grain toast topped with low-fat ricotta and sliced banana or berries; an egg-white veggie omelette with whole-grain toast.
The theory makes sense: Your body burns carbs for energy, but if you eat them before you go to sleep, your body just stores them as fat. One study in the European Journal of Nutrition put two groups of men on identical weight loss diets. The only difference? Half of the group ate their carbs throughout the day while the second group reserved carbohydrates for nighttime. The result? The nighttime carb group showed a significantly higher diet-induced thermogenesis (meaning they burned more calories digesting their food the next day). Moreover, the daytime-carb group showed increased blood sugar levels.
Although it’s true that egg whites are low in calories, fat-free, and contain most of the protein found in an egg, eating the entire egg is beneficial to your metabolism. The yolk contains many metabolism-stoking nutrients, including fat-soluble vitamins, essential fatty acids and—most significantly—choline, a powerful compound that attacks the gene mechanism that triggers your body to store fat around your liver. Worried about cholesterol? New studies have found that moderate consumption of two whole eggs per day has no negative effect on a person’s lipid (fat) profile and may actually improve it.
Going organic can be costly and leave a dent on your wallet, but it can speed up your metabolism. The antibiotics and growth hormones found in conventionally farmed foods could hamper your immune system and slow down metabolism. The amount of pesticides in non-organic foods can cause a above normal dip in metabolism in dieters who begin to lose weight, says Prevention.com.