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Finding Your Fit & Fabulous

1/30/2018 0 Comments

You Can't Run From The Facts

​For many years, moderate intensity steady state cardiovascular activity (MISS), and running in particular, was touted as THE best way to lose weight and get lean. While the benefits to regular MISS activity are many, if you think running more will help you to lose weight or to get healthier, you may be doing yourself a disservice. Here’s why:

RESISTANCE TRAINING AND HIGH INTENSITY INTERVAL TRAINING (HIIT) BURN FAT MORE EFFICIENTLY

Research conducted over the past few years demonstrates that weight training and HIIT burn more fat in less time than MISS does. Both raise your body’s oxygen consumption rates higher and for longer than does MISS. As a result, you burn more fat.

RUNNING TOO MUCH MAY SLOW FAT LOSS

Running may help you relax mentally, but it is stressful on your body. Stress produces a hormone called cortisol, and sustained elevated cortisol levels can result in insulin resistance, which ultimately results in greater fat storage. Additionally, your thyroid gland function may be affected by stress, resulting in a lower metabolic rate. Engaging in excessive amounts of endurance activities can also hinder strength training and reduce muscle growth rates.

RUNNERS SUSTAIN A HIGH PERCENTAGE OF INJURIES AND THUS INACTIVITY

If you run, how often do you sustain an injury that precludes you from doing much of anything? Up to one quarter of runners sustain lower body injuries that prevent them for running for more than seven days per year. Any period of sustained inactivity makes weight loss much more difficult.

EXERCISE CALORIES FROM MISS CONSTITUTE A SMALL PERCENTAGE OF DAILY CALORIC EXPENDITURE

Many people think that if they go for an hour run, they can eat everything in sight afterwards. While your body does burn calories during and after your run, it’s generally in the range of 200 calories on average. Several studies have shown that people on average eat at least twice as many calories as they have expended after MISS, and that many tend to crave sweet, higher fat “reward” foods after MISS than they do after resistance training.

THE ADAPTABLE BODY

Our bodies are remarkable. One of the really cool things they do is constantly get more efficient at doing the same thing. This can have many benefits, but if you are trying to lose weight, you don’t want your body to adapt to the physical activities you are doing because if it becomes more efficient, you burn fewer calories and lose less weight.

SO HOW DO WE LOSE WEIGHT AND GET IN SHAPE IF WE AREN’T DOING MISS?

Weight loss starts in the kitchen and with forming good nutrition habits. Exercise definitely plays a role in promoting weight loss through increased caloric expenditure. Recent studies show that while there is a place for moderate (2-3 times per week) sessions of MISS during weight loss, resistance and HIIT training yield better fat loss results with less stress on the body.

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1/2/2018 0 Comments

Calories Lie.  No, Really, They Do.


    How many of us have heard time and time again that if we simply count calories and stay active, we will be able to lose weight/gain weight/keep our weight stable?  While making sure that we are eating appropriately for our goals and activity levels is certainly important, there are a lot of different ways in which calories do not give us an accurate understanding of what our bodies really need, both on the “calories in” and “calories out” side of the equation.  Here are just a few common misconceptions:

CALORIES IN

1.    Food labels and databases are based on averages.  What you are eating may differ substantially from those averages.  Just type in any food on any common dieting application and you’ll see a wide range of calories for the exact same food.  Moreover, when preparing food labels, companies may use any one of five different methods to estimate calories, so the FDA permits inaccuracies of up to twenty percent.  In other words, 150 calories could really be anywhere from 130 to 180 calories!

2.    We don’t absorb all of the calories we consume.  Absorption rates vary widely from individual to individual and among various foods that we eat.  For example, people typically absorb fewer calories from nuts and seeds and more calories from fiber rich foods.

3.    The manner in which we prepare a food changes the number of calories available for absorption.  Cooking an egg or a potato, for example, nearly doubles the number of calories that can be absorbed.  Chopping or blending a food also increases the number of calories that can be absorbed.

4.    Different types of gut bacteria change the calories we absorb by up to 150 calories!

5.    Eyeballing portion sizes rarely works.  People tend to use incorrect portion sizes approximately two-thirds of the time, so unless you are weighing and measuring all of your food, you likely are eating more than you think.

CALORIES OUT

1.    Have you ever looked up how many calories you just burned by doing a particular exercise?  Well, almost all of those calorie expenditure tools are inaccurate because most use testing methodologies that large margins of error.  Fitness trackers are no better, demonstrating error rates of up to thirty percent.  Even the best out there have error rates of ten percent or more under most circumstances.  

2.    Just as the number of calories absorbed varies tremendously from individual to individual, the number of calories burned by an individual is unique and variable.  Genetic, epigenetic, hormonal, and environmental factors all play a big role in determining how many calories your body burns.  For example, sleep deprivation for a single night may decrease calories burned by anywhere from five to twenty percent, and the calories burned by the typical woman may vary by over a hundred calories depending on where she is in her menstrual cycle.  It is not uncommon for an individual’s metabolic rate to vary on a daily basis by as much as 100 calories.

3.    Different people’s metabolisms adapt differently to caloric surpluses or deficits.  Sometimes, the math lies.  In one study, researchers had subjects eat an additional 1,000 calories per day over their maintenance needs for a period of eight weeks.  Weight gain ranged from less than one pound to nearly ten pounds.  Doing the strict math, all of the participants should have gained much more.  Side note:  This is a major reason why when someone tries to gain weight to increase muscle mass on purpose, it actually takes a lot more effort than you would think!

4.    Digesting some macronutrients burns more calories than others.  Your body will use more than twenty percent of the calories it absorbs from eating protein to digest it.  By contrast, your body uses very little energy to digest fats.

5.    Your weight history influences your caloric needs.  If you have lost significant amounts of weight in the past, your body adapts to that weight loss and makes you more efficient so that you burn fewer calories to do the same work.

SO WHY DO WE TRACK CALORIES?

    Well, the answer is that most people don’t have to in order to be successful in adjusting their diet to a maintenance level or for weight loss purposes.  (Athletes competing at a high level or who have set particular goals for themselves often are the exception).  However, if you do choose to track calories, the important thing to remember is that what your body needs is unique to you.  Calories should give you data on which you can make good decisions about your nutritional needs, but you should not rely on calorie estimates to determine what YOU should be eating.  Similarly, you should not be relying on your FitBit to tell you whether you “can” have dessert or a piece of pizza.  Success with nutrition for most lies in creating solid habits that are repeated day in and day out.  




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    Amy Mariani is the owner of Fit & Fabulous LLC in Winchester, Massachusetts.  She is also the nutrition coach at www.mountainstrength.com.  Her mission is to help people eat healthy and love life.

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Important Notice

​Please note that you should consult with your physician prior to embarking on any major changes with regard to your nutrition.  Unfortunately, absent authorization from a medical professional, we are unable to provide individualized nutrition coaching to anyone under the age of eighteen, or to persons with certain medical conditions.  We are always happy to work with authorized medical professionals under these circumstances.

Contact Us
​amy@fit-fab.com
​781-729-0906
Winchester, MA 01890

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