'Did you lose because you had your period?'

    Sheena McKenzie, for CNN

    Updated 1437 GMT (2237 HKT) March 21, 2016

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    British number one tennis player, Heather Watson, lost her first round of the Australian Open last month after complaining of felling "light-headed." She put her poor performance down to "girl things," sparking a global debate about menstruation in sport
    Photos: Menstruation: Has sport's 'last taboo' been broken?
    British number one tennis player, Heather Watson, lost her first round of the Australian Open last month after complaining of felling "light-headed." She put her poor performance down to "girl things," sparking a global debate about menstruation in sport
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    "It just was one of those days for me. I felt very light-headed and low on energy - you know it's a shame that it's today. With the way I as feeling... um it didn't do me any favors today ... the last couple days I felt fine. I think it's just one of these things that I have, girl things. It just, yeah, happens," Watson told the BBC in a post-match interview.
    Photos: Menstruation: Has sport's 'last taboo' been broken?
    "It just was one of those days for me. I felt very light-headed and low on energy - you know it's a shame that it's today. With the way I as feeling... um it didn't do me any favors today ... the last couple days I felt fine. I think it's just one of these things that I have, girl things. It just, yeah, happens," Watson told the BBC in a post-match interview.
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    "It came out really innocently and she in no way wanted to blame the defeat on it, it's just one of those things that women have to deal with. And that's the thing. This is what women deal with on a monthly basis and I think it's almost impossible to say they are not affected by it in some way," said former British number one tennis player Annabel Croft (pictured).