What is the Energy Efficiency of the Human Body for Weight Loss?

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The energy efficiency of the human body for weight loss is estimated to be around 20%, meaning that climbing a 22.5m building while weighing 114 kg burns approximately 30 food calories per trip, not the initially calculated 6000 calories. This discrepancy arises because food calories are actually kilocalories, leading to confusion in energy expenditure calculations. Climbing stairs is deemed tedious, and the discussion suggests that engaging in enjoyable activities is more sustainable for long-term weight loss. Proper nutrition is also emphasized as essential for effective weight management. Overall, the conversation highlights the challenges of using physical activity alone for significant weight loss.
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so I am going to use the potential energy law e=mgh to lose joules(fat) the problem is that what's the energy effiency of the body i can't find that anywhere. I am climbing a 22.5m apartment building and my weight is 114kgs (im not fat just big boned)
 
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Why not assume it's 100% efficient?

E = 114 * 9.8 * 22.5m = 25,000

1J = 0.24 calories

so 25,000J = 6000 Calories.

The bad news is that "calories" on a packet of food are actually kilocalories.

So one trip to the top burns just 6 food calories

http://www.weightlossresources.co.uk/calories.htm
 
Google suggest you should assume the body is about 20% efficient so multiply by 5. One trip up is about 30 food calories. Looks like a BigMac is about 490 food calories or 16 trips up.

Edit: Got to laugh. Google has already changed the banner advert I see at the top of the page from one adbertising solar panels to one advertising a weight loss system.
 
16 trips just for a bigmac?! no wonder everybody is fat.
 
Climbing stairs is incredibly tedious. You're better off doing something more enjoyable which you will commit to doing for a long period of time, and it's absolutely necessary to eat properly.
 

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