Why Scientists Are So Worried About Running Out Of Helium | Unveiled
What Happens to Your Body During a Marathon? | Unveiled
VOICE OVER: Noah Baum
WRITTEN BY: Caitlin Johnson
The marathon is one of the most popular tests of human endurance. Globally, there are over 800 marathons held every year, for professional athletes and amateur runners alike. But exactly what are you willingly putting yourself through when you sign up to a race? In this video, Unveiled discovers exactly what happens to your body when you run a marathon! read more...
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