Adding interval training — bursts of high-intensity moves — to your workout is a great metabolism booster. "Studies have shown that people who do interval training twice a week [in addition to cardio] lose twice as much weight as those who do just a regular cardio workout," says obesity specialist Aronne. You can easily incorporate interval training into your workout by inserting a 30-second sprint into your jog every five minutes or by adding a one-minute incline walk to your treadmill workout. "Since your body is working harder, it's a more intense workout -- and you therefore burn more calories," says Westcott. On other days, shake up your routine with 40 minutes of cross-training. Ideally, aim for two 20-to-40-minute interval-training sessions and two 20-to-40-minute cross-training sessions a week.
Contrary to popular belief, researchers now say breakfast doesn’t kickstart the metabolism and may not be the most important meal of the day. A study in the American Journal of Clinical Nutrition had more than 300 overweight participants consume diets that included either eating or skipping breakfast. At the end of 16 weeks, dieters who ate breakfast lost no more weight than the breakfast skippers. And a second study in the same journal found eating breakfast had zero impact on resting metabolism. Breakfast is an ideal place to squeeze protein, fiber, and other nutrients into your day, but if the choice is a doughnut or nothing, opt for the nothing. Start your day with lean protein, which burns twice as many calories during digestion as fat or carbs. But don’t stress about squeezing it in before 9 a.m.
It’s important to remember that you are unique: Everyone was born with a different biochemical make-up. You have trillions of little energy factories called mitochondria that provide the fuel to run everything in your body. If you can remember high school biochemistry class, you know mitochondria convert the oxygen you breathe and the food you eat into energy for your body to use.
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.
Boosting metabolism is the holy grail of weight watchers everywhere, but how fast your body burns calories depends on several things. Some people inherit a speedy metabolism. Men tend to burn more calories than women, even while resting. And for most people, metabolism slows steadily after age 40. Although you can't control your age, gender, or genetics, there are other ways to improve your metabolism. Here are 10 of them.
Think of every bean as a little weight-loss pill. One study found that people who ate a ¾ cup of beans daily weighed 6.6 pounds less than those who didn’t—despite bean eaters consuming, on average, 199 calories more per day. The magic is in the perfect combination of protein and fiber: Studies show that those who eat the most fiber gain the least weight over time and that eating fiber can rev your fat burn by as much as 30 percent. Aim for about 25 grams of fiber a day—the amount present in about three servings each of fruits and vegetables.
Your body may burn a few calories heating the cold water to your core temperature, says Madelyn Fernstrom, Ph.D., founder and director of the University of Pittsburgh Medical Center Weight Management Center. Though the extra calories you burn drinking a single glass doesn't amount to much, making it a habit can add up to pounds lost with essentially zero additional effort.
In one study published in the American Journal of Epidemiology, volunteers who got 22 to 55 percent of their total calories at breakfast gained only 1.7 pounds on average over four years. Those who ate zero to 11 percent of their calories in the morning gained nearly three pounds. In another study published in the same journal, volunteers who reported regularly skipping breakfast had 4.5 times the risk of obesity as those who took the time to eat.
So how many calories should you consume? Depending on your level of activity, you can safely lose anywhere from half a pound to two pounds a week if you multiply your current weight by 11, says Applegate. (For example, if you're 120 pounds, aim for around 1,320 calories a day.) Unless you're less than five feet tall, don't let your daily calories dip below 1,200. "Research shows that women who consume less than this amount see their resting metabolic rate plummet by as much as 45 percent," notes Dale Huff, R.D., a St. Louis nutritionist.
Crash diets -- those involving eating fewer than 1,200 (if you're a woman) or 1,800 (if you're a man) calories a day -- are bad for anyone hoping to quicken their metabolism. Although these diets may help you drop pounds, that comes at the expense of good nutrition. Plus, it backfires, since you can lose muscle, which in turn slows your metabolism. The final result is your body burns fewer calories and gains weight faster than before the diet.
Source of protein at every meal: “Protein requires more energy – about 25 per cent more energy – to digest compared to fat and carbohydrates,” D’Ambrosio says. “This is why it is important to have one source of protein at every meal to help feel full until the next meal or snack.” However it’s important to note that our body still needs carbs as it’s the body’s main fuel source, she adds.
Research has found that people burn fewer calories when they sleep during the day and log their waking hours after the sun’s gone down. To come to this finding, researchers at the University of Colorado at Boulder studied 14 healthy adults for six days. For two days, study participants slept at night and stayed awake during the day, then they reversed their routines to mimic the schedules of night owls. When participants slept during the day, researchers found that they burned 52 to 59 fewer calories than they did while catching their Zzzs in the evening—likely because the schedule messed with their circadian rhythm, the body’s internal clock that plays a major role in metabolism function. If you have no choice but to sleep during the day, aim to cut 50-60 calories from your daily diet.
Some things, though, aren’t that simple. For instance, someone with a higher metabolism burns more calories at rest than someone with a lower metabolism, and can therefore get away with eating more food—even junk food. But a high metabolism isn’t a privilege reserved for a select few lucky enough to be born with it. You can raise yours and reap the benefits, too.
You probably don't need scientists to tell you that your metabolism slows with age. The average woman gains 1 1/2 pounds a year during her adult life—enough to pack on 40-plus pounds by her 50s, if she doesn't combat the roller coaster of hormones, muscle loss, and stress that conspires to slow her fat-burning engine. Thankfully, there's a way to help rev it up again. Midlife weight gain isn't inevitable: By eating metabolism-boosting foods and following the path, you'll sleep better, have more energy, feel firmer, and notice your clothes are looser in as little as two weeks. Here's how to increase your metabolism.
Activity. Aerobic exercise helps you burn calories, and strengthening exercises (resistance training) can help you build and maintain muscle mass. Having more muscle causes you to burn more calories even while at rest (your resting metabolic rate). Keep in mind that building more muscle to burn calories is much more difficult than burning calories through aerobic activities.
Spreading your meals throughout the day might keep you from getting too hungry and overeating. If so, it is a good idea. Athletes perform better when they eat more often in smaller amounts. If you are someone who has a hard time stopping once you start eating, 3 meals a day may make it easier for you to stick to an appropriate intake than lots of little snacks.
While going on a diet or purchasing the latest weight-loss products might seem like a quick way to shed pounds, you might not get the results you hoped for if you don't take your metabolism into account. Dieters might count fats, carbs, and calories meticulously, but in order to lose weight successfully, you have to understand your metabolism and what it does for your body.
When it comes to the best workouts for weight loss, neither weights nor cardio can completely move the needle on their own. Interval training is the best way to shed pounds, increase your metabolism, improve your cholesterol profile, and improve insulin sensitivity. At the gym, sign up for a HIIT class, or turn your favorite aerobic exercise, (running, biking, even walking) into an interval workout by adding periods of intense speed (start with 30 to 60 seconds) followed by periods of rest (normal speed) for the same amount of time. Do this six to 10 times to complete a fat-slashing workout. As you get better, slowly increase the amount of time of increased intensity.