Of course not. But in general it is the starting point for almost all. Make controlling calories out v. calories in a habit and then come back for the details below.
Weight loss: it’s just calories in/calories out… isn’t it?
Weight loss is just about calories in and calories out, right? We’ve all heard this a lot, and after all it’s simple physics. You take calories into your body, and you use them in the course of daily living and exercise. If there’s a surplus you store it, if there’s a deficit you lose weight. Simple. And trivially, it’s even true. But it’s actually a lot more complicated that, to the point where such a simplistic maxim can be cruelly misleading.