Introduction

To be a top athlete you need bags of energy. Whether you are a swimmer, footballer, tennis player or cyclist, when you are training or competing almost every day, having enough energy is a must.

So it's really important for athletes to eat the correct amount of food, and also the right kinds of food – because that’s where their energy comes from.

For them, it’s all about getting the right ‘Energy Balance’; athletes are experts at making sure they take in and use up exactly the right amount of energy. They need to make sure they always have enough, and to use it at the right time.

But it's not just athletes who need to be disciplined. All of us need to keep an eye on the energy we consume and how much we use. So consider this formula – it may seem really easy, but it’s harder than you think to get it right...

ENERGY IN = ENERGY OUT

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