Believe me, I'm aware of calories in/calories out, but I've never really found it so simple. Exercise has benefits beyond purely burning calories. And moreover,

Believe me, I'm aware of calories in/calories out, but I've never really found it so simple. Exercise has benefits beyond purely burning calories. And moreover, if you want to change body composition rather than just lose weight, it's important (fitness types have the term "skinny fat" for people who don't weigh much but still have high body fat).