If this person is consuming 2800 calories a day, which is above the USA average for active, healthy adult males, the spinning class alone is 25% of daily calories. OK, but the leadoff example in the article, which you start by quoting, is a person expending 700 calories in a 45-minute spinning class. A similar variation in your nutrition and activity budget is very significant, even if it doesn’t dominate all other factors. Would you trivialize the importance of a 20%-30% shift in your financial income? I doubt it, and you would be silly if you did. It’s also misleading to discount the importance of the 20%-30% of daily calories expended by people who exercise actively. It’s valuable for people to know that the number calories directly expended during exercise is less than most people think and hope, but the usefulness of that knowledge is undermined, if the focus isn’t widened to include all the less direct effects of exercise. It’s wrong to downplay the multifactorial importance of exercise. It’s true that the article you reference contains a quote similar to your paraphrase, but it also contains the much more accurate and important statement, “Physical activity seems to set off a cascade of changes that can affect how much you eat, how many calories you use, and, in turn, your body weight.” Our knowledge of the weight and obesity questions is growing rapidly right now, and new information appears every few days. Among many other problems, if you lose weight without exercising, you will lose muscle and other tissue as fast or faster than you lose fat. Exercise not only helps you lose weight, it is absolutely critical for losing weight in a healthy manner. Like most of the writing on health, diet, obesity, and exercise, this assertion isolates a single fact concerning one facet of a complex system, and draws global conclusions that are erroneous. This last statement is wrong, Kirk, and it is contradicted by the same article from which you quote it. “Exercise is certainly important it has many health benefits. Source: Why you shouldn’t exercise to lose weight, explained with 60+ studies – Vox Is obesity an inflammatory disease? Is our gut bacteria to blame? Is it caused by exposure to chemicals? I find that fact that obesity took off in the 1980s to be interesting, and wonder if it has something to do with environmental factors, such as new plastics that have been used since then, many of which are known to be endocrine disrupters. It’s not entirely about eating more there aren’t that many people who necessarily started eating more and then became obese. I still wonder about the obesity epidemic. It just doesn’t help you lose much weight, in part because your body’s metabolism adjusts to your activity in order to maintain your weight. That leaves only 10 to 30 percent for physical activity, of which exercise is only a subset.Įxercise is certainly important it has many health benefits. Digesting food accounts for about 10 percent. “It’s generally accepted that for most people, the basal metabolic rate accounts for 60 to 80 percent of total energy expenditure,” Kravitz said. We have no control over our basal metabolic rate, but it’s our biggest energy hog. There are three main components to energy expenditure, Kravitz explained: 1) basal metabolic rate, or the energy used for basic functioning when the body is at rest 2) the energy used to break down food and 3) the energy used in physical activity. One of the interesting points in the article is just how little of our caloric expenditure comes from activity. The multi-billion dollar diet industry is one of the biggest scams out there, constantly churning out new diet books, leading people to yo-yo as they lose weight, then gain it back. It’s interesting how wrong this thinking is, that exercise will make you lose weight. There’s just one problem: This message is not only wrong, it’s leading us astray in our fight against obesity. Countless gym memberships, fitness tracking devices, sports drinks, and workout videos have been sold on this promise. It’s been reinforced by fitness gurus, celebrities, food and beverage companies like PepsiCo and Coca-Cola, and even public-health officials, doctors, and the first lady of the United States. The spinning instructor was echoing a message we’ve been getting for years: As long as you get on that bike or treadmill, you can keep indulging - and still lose weight. And according to my bike, I had burned more than 700 calories. I felt like I had worked really, really hard. “I’m going to make you work hard,” a blonde and perfectly muscled fitness instructor screamed at me in a recent spinning class, “so you can have that second drink at happy hour!”Īt the end of the 45-minute workout, my body was dripping with sweat.
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