What's more gruelling - TTC or skiing solo to the South pole?

... clue: you won't get frostbite from the difficult one. Emma and Gabby are joined by polar explorer Jenny Wordsworth, who tells them about the parallels between extreme endurance expeditions and infertility (because there sure as hell aren't many differences), while Sophie is talking furry friends and Professor Tim is tackling thin linings: what can you do about them?

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