Most food advice makes us sad.

Not a week goes by without us being told that our favourite food is making us ill, or we should be eating more of the thing we hate.

But now a registered dietician and nutritionist has come up with a fast food tip that we’re most definitely on board with.

Her advice: the most sensible way to enjoy fast food is by ordering two burgers instead of one.

Now don’t get carried away - you don’t get to splurge on an extra Big Mac without making any sacrifices.

What Emily Field wants you to do is give up your order of fries for that second burger.

If you’re a chip fan, you’ll struggle with this change, but for those of us who’ll choose a big juicy burger any day of the week, it’s the perfect scenario.

It’s less about the calories though (you’ll eat the same or more calories in many instances), but about the composition of the food.

Protein keeps you feeling full, carbs give you energy, and fat helps you absorb vitamins and minerals.

Emily says the secret with a fast food splurge is to make sure you keep those three things balanced.

She says you’ll end up with fewer cravings later in the day, and less desire to binge.

She told Business Insider: "I want people to be able to approach any food, any situation, and know that they can still make a responsible choice for their body.”

In the body, fats and proteins slow the breakdown of carbs into sugar.

This buffers us against dips and spikes in insulin which can lead to binge eating.

Cereal is an example of a breakfast dish that’ll give you a sharp energy spike that quickly fades.

But Emily says throwing some protein-rich Greek yoghurt or some nuts onto it will help avoid the crash.