The Great Sperm Race is the most extreme race of all time; it has 250 million competitors. Scaled up to a human scale, the documentary re-creates this epic race, as it’s never been told before.
Want to watch more full-length Documentaries?
Click here: http://bit.ly/1GOzpIu
Follow us on Twitter for more – https://twitter.com/Real_Stories__
Content licensed from ITV. Any queries, please contact us at: email@example.com
Source Video URL