🎁 Can you lose weight by just exercising? Science says it rarely works. - The Washington Post

This interview was super interesting to me. The suggestion is that metabolism is completely connected to the number of cells you have.

So, how to begin? The main determinant of how many calories you burn every day is how many cells you have at work. Bigger people burn more calories. The type of cells matters, too. Fat cells burn a little energy, but not much. So, when we look at women versus men, men will burn more calories than women, but it’s because men tend to be a bit bigger and carry a bit less fat. If I compare a man and woman who have the same body size and same fat percentage, I would expect exactly the same energy expenditure per day.

Super interesting stuff. Goes on to highlight that age impacts things different than we think.