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Why does eating lots of fish rich in omega-3 fatty acids (salmon, herring, and tuna) help amp up metabolism? Omega-3s balance blood sugar and reduce inflammation, helping to regulate metabolism. They may also reduce resistance to the hormone leptin, which researchers have linked to how fast fat is burned. A study in Obesity Research found rats that ingested large doses of fish oil while exercising lost weight. Take omega-3 fatty acid supplements; Hyman recommends 1,000 to 2,000 milligrams per day. Hate the fishy after-burp? Try flaxseed oil, walnuts, or eggs fortified with omega-3s. Or check out supplements (by brands such as Nordic Naturals) that have no fishy taste.
Dehydrated cells and organs don’t function as well as they should, leaving your metabolism lower than it could be if you’re not fully hydrated. Water is best, but you can also increase your hydration levels by consuming other beverages too. Just make sure they don’t have high calorie or sugar levels. (This suggestion works especially well for college students who hope to avoid the Freshman 15!)

Green tea has long been heralded for its antioxidant polyphenols. But new evidence shows the active ingredient, catechin, may crank up metabolism. Researchers conducted a series of studies in dieters and found that those who went green lost more weight than those who didn't, suggesting that catechins may improve fat oxidation and thermogenesis, your body's production of energy, or heat, from digestion. But how much do you have to drink? According to one study, if you drink five eight-ounce cups of green tea a day, you can increase your energy expenditure by 90 calories a day. Sounds like a lot of tea, but it's not hard to do if you also drink it iced.

Ideally, we sleep about eight hours for every 24. Most people spend another seven to ten hours sitting at their desk. That means most of us spend the overwhelming majority of our time sedentary. Our bodies weren’t designed for this level of inactivity—most of humans’ evolutionary history involved being active, searching for food and fuel. Nutritionist Lisa Jubilee says that one way to burn more calories daily is to stand more and sit less. She cites a British study which found that standing at work burned 50 more calories per hour than sitting. If that doesn’t sound like a lot, consider this: If you stand for just three hours of your day, in one year you’d expend more than 30,000 extra calories—which amounts to about 8 pounds of fat!


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.
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Playing up your favorite body parts can boost your confidence and draw attention away from spots you want to minimize. Sculpting your shoulders, arms, chest, and back, for example, can help balance heavier hips so you look more proportionate. Plus, you'll be firmer all over. Celebrities do it all the time: These seven sets of sexy, toned legs are proof!


Even the fittest and most health-conscious people can’t avoid aging. And while, there’s nothing wrong with adding years of experience and memories under your belt, sometimes age adds a bit more than that. Plenty of factors contribute to increased weight over time, but decreased metabolism is a main culprit. In fact, even if you continue with your regular eating and exercise plan every year, you’ll still gain two pounds per year, says Kimberly Corp, certified Pilates instructor, and co-founder of Pilates on Fifth. The good news is that you still have a lot of control over your metabolism after 50. Here are some expert tips to help rev up your engines.

Skimping on sleep can derail your metabolism. In a study at the University of Chicago, people who got four hours of sleep or less a night had more difficulty processing carbohydrates. "When you're exhausted, your body lacks the energy to do its normal day-to-day functions, which include burning calories, so your metabolism is automatically lowered," explains Peeke.

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