Why sperm health is important

Sperm have a very demanding role to play in fertilisation. The journey sperm undertake on their way to fertilise an egg has been likened to a human trying to swim a journey of several thousand kilometers.6

*Based on an average pixel size of 40 μm and an average sperm length of 5 μm.
†Ian Thorpe’s speed calculated from 400m world record at Manchester 2002 Commonwealth Games.
(400m in 4 minutes/body length of approx 2m.)

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