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Why it鈥檚 not when you do it, it鈥檚 how you do it.

Most female mammals schedule their sex life into just the couple of days of when they鈥檙e fertile. So why do humans (in theory, at least) do it whenever the mood strikes?

To find out, Dessa explores stinky t-shirt tests, and all sorts of things we鈥檇 better not mention here. Parental discretion is strongly advised.

(Image: Metronome with ticking heart, Credit: Getty Images)

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23 minutes

Last on

Mon 29 Mar 2021 02:06GMT
大象传媒 World Service

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Broadcasts

  • Sat 27 Mar 2021 20:06GMT
    大象传媒 World Service East and Southern Africa
  • Sun 28 Mar 2021 09:06GMT
    大象传媒 World Service
  • Sun 28 Mar 2021 21:06GMT
    大象传媒 World Service except East and Southern Africa
  • Mon 29 Mar 2021 02:06GMT
    大象传媒 World Service