Back to: Human: The World Within

S1E3

Episode 3 Preview | Fuel

May 12, 2021

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.

Human: The World Within

Full Episodes

React
React
S1E6

See how the technology of the brain and nervous system shape our experience of the world.

Sense
Sense
S1E5

Explore the incredible world of human sensation and how it defines our reality.

Defend
Defend
S1E4

Uncover how the human body defends itself in an increasingly dangerous global environment....

Fuel
Fuel
S1E3

Journey through the factory at the center of our bodies that turns food into energy.

Birth
Birth
S1E1

Learn the story of human reproduction from attraction to a babys first breath.

Pulse
Pulse
S1E2

See the world beneath the human heartbeat that makes our craziest feats possible.

> View All Videos

Clips and Previews

Episode 6 Preview | React
Play
Episode 6 Preview | React
S1E6

See how the technology of the brain and nervous system shape our experience of the world.

Episode 5 Preview | Sense
Play
Episode 5 Preview | Sense
S1E5

Explore the incredible world of human sensation and how it defines our reality.

Episode 4 Preview | Defend
Play
Episode 4 Preview | Defend
S1E4

Uncover how the human body defends itself in an increasingly dangerous global environment....

Episode 1 Preview | Birth
Play
Episode 1 Preview | Birth
S1E1

Learn the story of human reproduction from attraction to a babys first breath.

Episode 2 Preview | Pulse
Play
Episode 2 Preview | Pulse
S1E2

See the world beneath the human heartbeat that makes our craziest feats possible.

> View All Videos