JULIETTE’S TOP TIPS

There will be bad days, but the feeling you get when you finish a run makes it all worth it.

Portion size is crucial. I still eat chocolate, but now I’ll just have half a bar.

When you’re training, you have to fuel your body properly, so don’t be too hard on yourself.

Use running as thinking time. If I have a presentation to do, I’ll go for a long run and all my best ideas will come to me.