Human: The World Within

Episode 3 Preview | Fuel

Preview: Episode 3 | 30s | Video has closed captioning.

Through the worlds of a religious faster, an ultra-marathon runner, a farmer and a young girl beating allergies, go deep into the world of the human gut, which processes the fuel our bodies need to keep going.

Aired: 05/12/21

Rating: TV-PG

The full episode is no longer available for online streaming. Why?

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Problems Playing Video? | Closed Captioning