Comment by triceratops

> Human bodies don't adapt much to become more metabolically efficient

https://www.scientificamerican.com/article/the-exercise-para...

That's not what recent research indicates. The author has written a book about this as well.

It's the key evidence behind the idea that you can't outrun your fork. To lose weight diet is the only way. Exercise gives you a nicer-looking, stronger body but it can't do much to make you shed fat.