the "calories in, calories out" thing is not wrong at all. not "believing" in it is just like disregarding global warming or evolution. of course it's not a si

the "calories in, calories out" thing is not wrong at all. not "believing" in it is just like disregarding global warming or evolution. of course it's not a simple addition. age, genetics and a lot of other factors come in. what is dangerously wrong is thinking that changing your calorie intake is easy. it may be very difficult to gain or lose weight depending on which side you are, because changing the way you eat durably is freaking difficult.