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54:40
See how experience teaches the brain and body to work together and develop new skills.
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54:40
Discover the miraculous ways the human body works to stay alive and healthy.
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54:40
Learn how humans grow from a single cell to beings of more than 37 trillion cells.
1:05
From an early age, we learn how to control the movements of our bodies.
1:56
Danny demonstrates how new motor skills must be learned and developed with practice.
0:53
Freya's bones in her racket arm have become thicker to cope with her intense workouts.
0:59
As Lew pushes himself, his body demands more oxygen to keep it going.
2:01
What Recker does during this growing period will change the structure of his brain.
1:31
Our bodies respond quickly to survive in cold temperatures.
1:07
What determines when we start puberty has until recently been a mystery.
