In a small German study, subjects who drank 16 ounces of water at a time experienced a 30 percent increase in metabolic rate during the following hour, burning an extra 24 calories. The researchers recommend cool water because the body expends extra calories warming it up to your body temperature. Water's not the only healthy drink. We sipped our way through dozens of smoothies, teas, and juices to find this list of the most delicious and nutritious liquids.

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.

We all know sitting around too much is really bad for our health: One meta-analysis reported that prolonged sedentary time was associated with harmful health outcomes, and many other studies have shown it can (obviously!) lead to weight gain. Limiting your time in front of the TV at night and even trying to stand more while you're at work — perhaps with a standing desk — can increase your metabolism, helping you lose weight with minimal effort.
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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.
Muscles are fat-burning furnaces, so be sure to do enough resistance training to build and maintain them (these fast workouts tone your whole body in 30 minutes), and follow your workout with a healthy meal or snack that contains protein, carbohydrates and fat. Building new muscle raises your Resting Metabolic Rate (RMR) so you'll burn more calories every day.
Muscles are fat-burning furnaces, so be sure to do enough resistance training to build and maintain them (these fast workouts tone your whole body in 30 minutes), and follow your workout with a healthy meal or snack that contains protein, carbohydrates and fat. Building new muscle raises your Resting Metabolic Rate (RMR) so you'll burn more calories every day.
Eating an apple each day can help prevent metabolic syndrome, a disorder associated with abdominal fat, cardiovascular disease, and diabetes. They’ll keep the doctor away and your muffin tops at bay because apples are a low-calorie, nutrient dense source of fiber, which studies have proven to be integral to reducing visceral fat. A recent study at Wake Forest Baptist Medical Center found that for every 10-gram increase in soluble fiber eaten per day, visceral fat was reduced by 3.7 percent over five years!
It’s well reported that fiery capsaicin (think: hot sauce, cayenne, chili) can rev up the metabolism, but study findings presented at the Experimental Biology meeting in Anaheim, California, showed similar weight loss potential in dihydrocapsiate (DCT), the non-spicy cousin of hot peppers. Participants who ate the most DCT experienced a metabolic boost that was nearly double the placebo group! Bottom line: Pile on the poblanos!
Even when you’re at rest, your body is constantly burning calories. In fact, 75 percent of the calories that you burn each day are being used up just keeping you alive. “Resting metabolic rate” is much higher in people with more muscle, because every pound of muscle uses about 6 calories a day just to sustain itself. If you can pack on just five pounds of muscle and sustain it, you’ll burn the caloric equivalent of three pounds of fat over the course of a year.
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If you have a fast metabolism, it means your body burns more calories during rest as well as during activity. It also means you’ll need to take in more calories to maintain your weight. As expected, someone with a low metabolism is the opposite – meaning they burn fewer calories at rest and during activity, and have to eat less if they want to avoid weight gain, the school says.
Your body constantly burns calories, even when you're doing nothing. This resting metabolic rate is much higher in people with more muscle. Every pound of muscle uses about 6 calories a day just to sustain itself, while each pound of fat burns only 2 calories daily. That small difference can add up over time. After a session of strength training, muscles are activated all over your body, raising your average daily metabolic rate.
As far as foods and supplements go, nothing's been shown to have a meaningful impact on metabolic rate. "Green tea has a reputation for being a metabolism booster because it has compounds like caffeine, but the effect is so tiny, it's negligible," Sasso says. Protein also gets branded as metabolism-boosting, because the body uses more energy to digest it than it does for fat and carbs. But this effect is only temporary and, again, not big enough to make a real difference on its own.
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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.
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.
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.
Our bodies need dietary fat—particularly healthy oils—in order to lose weight and function properly. The right kinds of fats and oils help quash hunger, maximize your metabolism, and speed nutrients through your body. Healthy monounsaturated fats like olive oil can actually help the body to burn calories. Extra virgin olive oil may also increase blood levels of serotonin, a hormone associated with satiety. Plus, olive oil is also loaded with polyphenols, antioxidants that help battle many diseases such as cancer, osteoporosis and brain deterioration.
“Caffeine can increase your metabolism up to 8 percent,” says Stollman. “Brewed tea kicks it up another notch by boosting your metabolism by 10 percent.” Green tea goes above and beyond thanks to its catechins, and the effects add up. Pincus recommends three to four cups a day to potentially burn up to 50 to 100 calories. However, it’s important to refrain from using this an excuse to indulge in flavored lattes or sugary green tea drinks from the store. “Don’t make it into dessert—that defeats the whole purpose,” says Gans. Check out these other foods that are scientifically prove to burn fat.
Here's welcome news: You may have inherited your mom's slow-mo metabolism, but you’re not stuck with it. New research shows you can trick your body into burning calories more efficiently, especially if you hit the gym. By strength-training just a couple of times a week, for example, you’ll reverse 50% of the seemingly inevitable metabolism slow-down that comes with age, says Gary Hunter, PhD, a professor of human studies at the University of Alabama at Birmingham. So take control of your metabolism by making these boosters part of your routine—and (finally) stop sweating every cookie.

It's essential for carrying the oxygen your muscles need to burn fat, says Tammy Lakatos, RD, co-author of Fire Up Your Metabolism. Until menopause, women lose iron each month through menstruation. Unless you restock your stores, you run the risk of low energy and a sagging metabolism. Shellfish, lean meats, beans, fortified cereals, and spinach are excellent sources. Check out this list of foods with more iron than beef.


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.
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