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5-6000 Calories is normal for an 8 work hour shift at -10c. https://academic.oup.com/jcem/article/99/12/E2772/2833739
This is very interesting paper, but is it a right one? I do not see any mentioning of working in such conditions nor 5-6000 calories per day.
http://www.dtic.mil/dtic/tr/fulltext/u2/a240839.pdf
I will update this if I find it again.
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But not the conservation mass-energy. What's to say we're not burning off our fat in a nuclear reaction? :-D
Chemical reactions undergo the same mass loss as nuclear reactions. A fat molecule weighs very slightly more than the sum of it's parts. The resulting water and carbon dioxide products will weigh less than the reactants by exactly the amount of energy released. It's just much more difficult to notice because the amount of energy released is as much less.
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Meanwhile the reverse happens when a tree builds itself by pulling out carbon from the co2 in the air
Trees (and other plants) are almost entirely air and water. Very little soil gets incorporated, and almost all of that is trace minerals dissolved in the water.
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Exercise makes more sense! Breathing hard == losing weight!
Not worth it. If you excercise hard for an hour daily you can triple your rate of breathing during that hour. So you get 26 instead of 24 hours of usual fat burning. Not much of a difference. Skipping some food can do much more.
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That quote is deceptive. An hour's jogging will burn at least 500 calories even for quite small people going quite slow, perhaps 700-800 for larger or faster ones. That would be a massive muffin and significantly more than 20% of an average calorie consumption.
Muffins can have quite a lot of calories. The (admittedly fairly large) ones at Costco are over 600 calories: http://www.myfitnesspal.com/food/calories/kirkland-costco-bl...
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There is a hard limit of ketogenesis: about 185g of ketone bodies per day [0]. (That's about 2 lbs every 3 days). [0] https://www.diapedia.org/metabolism-insulin-and-other-hormon...
That's a matter of liver health, right? So you could theoretically go higher (by combining antidiabetic drugs with beta-adrenergic agonists, and then sitting in a hospital in a cold water bath hooked up to a liver dialysis machine.) Not a viable alternative to dieting and exercise, of course, but maybe an alternative to liposuction or gastric-bypass surgery.
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This is great advice but just be aware that calorie calculations in Strava are often way off: too high for walking / running and too low for cycling. So you can't reliably use their numbers to see if you're ahead or behind.
Good information. I'm pretty happy with the consistency of the calorie counts on Strava (Apple Watch has HRM built in) vs Peloton bike (with chest HRM strap), so I'm assuming you're referring to Strava's estimates without HRM (not sure if they even take into account gender/age/weight).
For anyone coming straight to the comments looking for an answer to the question: it turns into CO2 (and a bit of water) and you breathe it out. When you realize that you have to breathe out all the weight you lose, I think it gives you a bigger appreciation for how difficult weight loss can be.
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From the paper "Replacing one hour of rest with exercise that raises the metabolic rate to seven times that of resting by, for example, jogging, removes an additional 39 g of carbon from the body, raising the total by about 20% to 240 g. For comparison, a single 100 g muffin represents about 20% of an average person’s total daily energy requirement. Physical activity as a weight loss strategy is, therefore, easily fo…
I can't help but groan at some of the "obvious" health and weight loss platitudes that get smugly thrown around. " Calories in, calories out! " " You can't outrun a bad diet! " " Weight is lost in the kitchen! " Sure, things ultimately boil down to intake-vs-expenditure. However, it IS more complicated than that in practice . As software developers, we complain when management makes decisions based on inadequate or p…
I was a part time fitness instructor for over a decade, but when people asked about losing weight, I would minimize the importance of exercise for weight loss - to the surprise of many.
Sure I ate like crap and maintained my weight, but between teaching 10 hours a week, training for runs and occasional weight lifting, I was easily burning an extra 1000+ calories a day. Most people aren't in the type of shape to burn that much in a reasonable amount of time.
Since I was being paid to workout, I was very consistent. How many people will consistently work out an average of two hours a day no matter what?
When I stopped teaching and started doing the minimum amount of exercise, I had to be much more careful about what I ate and I'm still 10-15 pounds heavier than I was at my prime.
I'm not trying to dismiss the other benefits of exercise, but weight loss isn't high on the list of benefits for most people - especially not walking or low impact exercise.