Full Speed Ahead: Increase Your Metabolism to Maintain a Healthy Weight

by Robin Warshaw
Let's say you've been pretty diligent about exercising since your early 20s. You run or walk briskly or use the elliptical machines at the gym at least three times a week. You might even go to a step aerobics or Pilates class.

And, just to make the example complete, let's also imagine that your diet is healthful most of the time. You avoid high-fat foods, don't drink much alcohol and eat lots of fresh vegetables and fruits and fiber.

Nonetheless (you knew there would be a "nonetheless," didn't you?), your weight has started to creep up. You watch what you eat even more these days but don't see the response from dieting that you once were able to achieve.

Burning calories

What's happening, although frustrating, is very normal.

As you get older, your body's metabolism lowers. Think of it like a car's engine. The food you eat (fuel) gets turned into energy, which is used to run your bodily activities. With age, that process begins to operate less rapidly than it did when you were an infant. And while your metabolism "stabilizes somewhat between [age] 20 and 40," it then "goes down for the rest of your life," says Catherine G.R. Jackson, PhD, FACSM, a professor of kinesiology at California State University, Fresno.

Result: even if you exercise and eat the same as always, you'll probably start gaining weight.

Is your metabolism high or low?

Your age is only one factor in determining why your metabolism runs the way it does. Some people talk of having a "slow" or "fast" metabolism. In reality, your basal (or resting) metabolic rate can fall anywhere from low to high. Your rate is what's normal for you and refers to how many calories you use just for breathing, digesting your meals and such. Those functions make up about 75 percent of your daily energy, or calorie, use, and you can't influence them very much. Physical activity comprises the rest.

To get a true measure of your metabolism, your rate is assessed while you are resting, after having had no food or exercise for 12 hours. "The rate is related to the surface area of your body, but it also depends on brain function to set the point at which you use Kcals (kilocalories) or produce heat," Dr. Jackson says. "There are hardly two people who are exactly alike."

It's not fair, but your husband, brother or male coworkers, in general, have higher basal metabolic rates than you and your female friends. Muscle burns more calories than fat, and men tend to have more lean muscle mass than women do. Women often gain weight and lose muscle mass as they age. Yet obese people may have higher metabolic rates because they have more body surface. Confusing, yes?

So dieting alone isn't the answer. Indeed, it may be counterproductive because dieting triggers your body to lower metabolism to "hang on to fat," says Dr. Jackson. "If a diet is prolonged, and metabolism is driven down, you will gain weight even if you consume fewer calories than before the diet."

Revving up

Certain things will increase the energy you produce, at least briefly. Eating a meal raises your metabolism, especially if it's high in protein. That's why some fad diet products based on protein claim to "burn fat."

You'll also find ingredients such as caffeine and ephedrine used to increase energy expenditure by raising metabolism, but these may have adverse effects. Weight-loss products that use amphetamines can even cause death, Dr. Jackson notes.

Foods such as red pepper (capsaicin), black pepper, ginger, green and black teas (which may contain caffeine) and other spices are being studied scientifically for possible weight-control benefits. These all raise metabolism through the body's heat production and energy use, but whether they can provide long-term results (and at what dosages) remains unclear.

"The real way to change metabolism is to exercise on a regular basis," says Dr. Jackson. "This changes brain function."

Push your metabolism higher

When you're physically active nearly every day, your body maintains an elevated metabolic rate. In one recent study, women who did 40 minutes of aerobic exercise at 80 percent of maximum heart rate increased their bodies' energy expenditure rates for the next 19 hours. That keeps your engine revved up and burning calories, even while you're relaxing and watching an old movie in your fuzzy slippers.

A few ways to reach that goal:

Making small changes every day helps you use more energy, thereby raising your metabolism and burning more calories. Walk to the store instead of driving or add an extra 10 minutes to your current aerobic exercise regimen.
Keep your body's fires burning all year long: cut your own grass, put away the leaf blower and use a rake, hand-shovel light accumulations of snow (but check with your health care provider first if you have any chronic conditions).
When it gets too wet or cold outside, keep moving indoors. Walk the steps in your house or the hallways in your apartment building or office complex. Instead of sitting and watching TV, walk for 20 minutes in front of the set. Swing your arms for extra aerobic benefits.
Include strength training (lifting weights) in your exercise schedule. It helps create lean muscle mass, which burns more calories than fat does.
Hold the line on the calories you consume. When you couple that with daily activity, you'll have control of the two most important elements for maintaining a healthy weight for life.

:butter: Good article! Thank you editor!

You and Annette both do well with exercise. I have yet to introduce it and I am almost at a stand still now, so I have got to find my groove. :)

:) Thank you! I am fighting a cold, and it is so hard to motivate myself to exercise. But I know that I must continue or else I will regain all of my weight loss.

:broc:

:wow: and praise God, you have lost 55 pounds. So :im:

:hug:

I hope you can get plenty or fluid and rest and knock this right out.

It is a problem with weight management and keeping up with exercise. When I reached goal weight last time, I was already exercising well over 3 hours a day. It was obsessive but I had the time and motivation to devote to it. This time, after really thinking it out, I decided to see if I loose the weight without introducing such an impossible upkeep. I was able to and I am grateful, but now I know to get to goal I have to update my Plan. I am returning today to counting calories. I am even reluctant to do this, but I am eating more and I believe I have to carefully watch what I am doing or everything that I believe God has accomplished through me this year will be quickly forgotten. I really hope just monitoring this aspect of the diet will help me to clearly see if adjustment must be made.

:) Thanks, my cold is getting better. Even walked this morning for one hour around the track.

Yes, I think that we must set realistic exercise routines. I think that I can exercise at least three days a week, and eat moderately to keep off the weight.

I know that you don't like counting calories but maybe you can do it until you get to goal. I find counting calories works for me. I am now recording my calories on the Spark People website. I like Fitday, but I wanted a change.

This cold weather is also enticing me to eat more.

You are doing well losing weight, slow and steady!

:hug:

Glad to see you walked!
I have my own software. I opened it up today and saw that 2005 was the last time I tracked. I was at 1259 calories today and I already know for me that 1200 is weight loss, 1500 is maintenance. Just going to try it for awhile and then go back to trusting my no method method. :)
I also got a Spark People account when the went from a pay site to free. I just recently read that they have 2 million members now. They originally wanted to compete with eDiets on line at a lesser price. The owner accomplished that when he desided he would get one million members by making it free.

I like the way the information in this article was presented and the tips for maintaining weight loss. :)

I can attest to the fact that exercise and counting calories does make a difference in the ability to maintain my weight loss, and I thank you, Dear Editor for providing information in the forums about these very topics many years ago, when I first came aboard on the Grace Forum. :) I know you will find some form of exercise and a way to monitor your food intake that you will enjoy, and “find your grove” like you stated. :) I’m praising God with you that you’ve made great progress so far with a 55 pounds weight loss!!!

Ironia, I’m glad that you are getting back in the swing of things as far as your health and your exercise are concerned. With the Lord you have already accomplished a great deal, so keep up the good work!!! I’m also glad you are a maintainer, too :)

Annette, of all the posts that we have had, it all does boil down to the two keys, calorie count and exercise. None of the fad diets seem to promote a maintenance article of their own!