For the first time in history, just over 50% of all races are run by women.

While women are leading in the number of participants, research on women in sport is still stubbornly behind the guys'. We know that women and men perform differently, carry and use fat differently, as well as react to pain differently. Typically, men are bigger, stronger, and faster, until you get to the ultra distance, where women can actually break the tape first.

On today's Run to the Top, Dr Megan Roche, 5-time national trail champion and Stanford researcher explores the science behind the biological differences between men and women in endurance running.

And this is not just a show for the women runners. Guys, you'll want to listen up as well if you want to know why the women are getting better and better.

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AG 1

Ask yourself - do you get enough green veggies each day?

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