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You might find this helpful: https://www.fourmilab.ch/hackdiet/e4/rubberbag.html https://www.fourmilab.ch/hackdiet/e4/rubberbag.html A human body is a mechanic
by erpellan 10y ago
You might find this helpful: https://www.fourmilab.ch/hackdiet/e4/rubberbag.html https://www.fourmilab.ch/hackdiet/e4/rubberbag.html
A human body is a mechanical system.
Fuel + air in --> Work done + waste out.
That's it. Any other argument is literally disputing the laws of thermodynamics.
- bcoughlan 10y agoIt's not that it's wrong really. It's just that it's not particularly useful for weight loss. If I eat mainly sugar and starches I can easily wolf down 4000 calories a day. If I eat a low carb diet it's a struggle to eat 2000 calories a day, the feeling of hunger isn't the growl in my stomach but a kind of mild headache, and after a couple of days my cravings for sugar subsides. The idea that some foods are more "satiating" than others is important, and involves many factors from calorie density to palatability. Our bodies also regulate our desires for energy input and output. If I am depressed, exhausted or do not get enough sleep I will crave carbohydrates. If I eat certain foods I will feel lethargic and be more inclined to sink into the couch for the evening. "Eat less, move more" to lose weight is true, but not useful. How you encourage people to do that that is the domain of biology and psychology, not physics.
- kj01a 10y agoIt's not helpful because some food are more calorie dense than others? How does that make sense?
- XFrequentist 10y agoThat's not a fair summary of the comment.
- technopath 10y agoThe percentage of the fuel used relates to the kind of fuel and the amount of work done.