Don't think you have time to hit the gym circuit? You can get great results with only two 15-minute lifting sessions a week. Westcott's research, published in the journal Medicine & Science in Sports & Exercise in January 1999, found that doing just one set of 10 reps reaps about the same muscle-building benefits as three sets, as long as they're performed to muscle fatigue. Bonus: Weight training also gives your metabolism a short-term boost. When women lift weights, their metabolisms remain in overdrive for up to two hours after the last bench press, allowing them to burn as many as 100 extra calories, according to a study published in June 2001 in Medicine & Science in Sports & Exercise.
Research shows that getting plenty of protein can boost your metabolism, causing you to burn an extra 150 to 200 calories a day, says Jeff Hampl, Ph.D., R.D., a spokesman for the American Dietetic Association. "Protein is made up mainly of amino acids, which are harder for your body to break down [than fat and carbs], so you burn more calories getting rid of them," he explains.
Eating more often can help you lose weight. When you eat large meals with many hours in between, your metabolism slows down between meals. Having a small meal or snack every 3 to 4 hours keeps your metabolism cranking, so you burn more calories over the course of a day. Several studies have also shown that people who snack regularly eat less at mealtime.
Weight loss doesn’t get easier than this: Simply drinking more water may increase the rate at which healthy people burn calories, according to a study in The Journal of Clinical Endocrinology and Metabolism. After drinking approximately 17 ounces of water (about 2 tall glasses), participants’ metabolic rates increased by 30 percent. The researchers estimate that increasing water intake by 1.5 liters a day (about 6 cups) would burn an extra 17,400 calories over the course of the year—a weight loss of approximately five pounds!
Whole foods contain an assortment of vitamins, minerals, and nutrients that act as metabolic spark plugs, giving you the energy to get up and move around. That’s the theory behind increasingly popular diets like Paleo, which eschews processed foods in favor of lean meat and vegetables. Without preservatives and unnecessary crap in your food, your body will burn clean, and that translates to a faster-moving metabolic engine.
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.
Stop obsessing over numbers. Quality over quantity becomes key for optimizing mitochondria. That said, if you’d like to know how much you should be eating, calculate your resting metabolic rate (RMR) or the total number of calories your body needs to survive at complete rest. If you eat fewer calories than your RMR, your body thinks it is starving. Calculating your RMR is easy. If you are average size, take your weight in pounds and multiply by 10. If you are very muscular and lean, multiply your weight by 13. If you are very overweight, multiply it by 8. Eating less than your RMR means your body goes into starvation mode.
Muscle is typically more dense than fat and uses more energy as a result. The National Health Service (NHS) in the UK states that those who have a higher muscle to fat ratio tend to have a higher BMR because of the fact it requires more energy to maintain. For every pound of muscle, the body burns 50 calories to maintain a person's BMR. Exercising to build muscle will help boost your metabolism as you get your body in shape.
This tea is known for its powerful thermogenic effects—meaning it turns up your body’s calorie-burning mechanism—and can also promote weight loss by improving insulin sensitivity. In a Nutrition and Metabolism study, participants were divided into two groups where one group took a placebo 60 minutes prior to exercise and the other group ingested a 1,000-milligram capsule of yerba maté. Researchers found that those who consumed the herb increased the beneficial effects their workout had on their metabolism. Yerba maté is just one of the best teas for weight loss!
Iron deficiencies can slow down your metabolism. Do you know what’s got plenty of it? Lean meat. Eating three to four daily servings of iron-rich foods will help keep your inner furnace burning. Fortified cereals, dried fruit, and dark leafy greens will get you on your way to meeting your iron goals, but lean meat—with its high muscle-building protein content—will be doubly useful in revving up your metabolism.
Don’t cave into that extra episode of Stranger Things: Getting a quality night’s is a critical component of a healthy metabolism. “Too little sleep appears to wreak havoc with leptin and ghrelin, two hormones that regulate appetite,” says nutritionist Elisa Zied. “When you don’t sleep well, you feel hungrier and you tend to eat more and choose more nutrient-poor foods.”
When you have a drink, you burn less fat, and more slowly than usual because the alcohol is used as fuel instead, especially drinks high in sugar. Go for these low-calorie alcoholic drinks at the next happy hour to keep your waistline in check. One of the biggest mistakes people make when drinking alcohol is portion sizes. Be sure to stick to one serving; for beer, it's 12 ounces, wine is 5 ounces, and liquor is 1.5 ounces. Avoid sugary mixers that add empty calories and sip slowly to fully savor your drink.
If you're someone who loves being cold while they sleep, you might already be doing your metabolism some good. A small study looked at how lowering the temperature while you're catching some zzzs may increase your levels of "brown fat" — the "good" fat that keeps you warm in cold temps by burning calories to generate heat. When the participants in the study slept at 66 degrees opposed to warmer temperatures, their amount of brown fat increased, while the opposite occurred during the months their sleeping areas were warmer. Turns out blasting the AC can really do you some good.
Strength training is another great way to make sure your metabolism is at its peak. Through strength training, you can tone your muscles and boost your metabolism. The great thing about muscles, other than looking lean, is that they burn more calories than fat. No need to bust out the big weights for strength training — try some basics, like push-ups, sit-ups, resistance bands, or yoga.
Build muscle mass: Muscle burns more calories than fat, D’Ambrosio says. To be specific, a pound of muscle burns about six calories per day compared to two calories a day for a pound of fat. “If you want your body to burn more calories, you had better build extra muscle mass,” she says. “This is why a person with higher muscle mass will burn more calories and have a higher metabolism at rest than a person with less muscle mass.” Focus on doing resistance or strengthening exercises at least twice a week.