Watch Preview Preview 30s / TV-G Explore the internal mechanics of the human body through pioneering graphics and case studies.
Watch Clip Building a Heart 1m 53s / TV-PG In order to regenerate a functional heart, Dr. Ott takes skin cells and reprograms them into stem cells.
Watch Clip Recker Eans, Drummer 2m 1s / TV-PG What Recker does during this crucial growing period will change the structure of his brain forever.
Watch Clip Freya Christie, Professional Tennis Player 53s / TV-G Freya's bones in her racket arm have become thicker to cope with her intense workouts.
Watch Clip Working Together 1m 42s / TV-G We learn to work together by reading the emotions and facial expressions of others.
Watch Clip Kate Burn, Ballerina 1m 30s / TV-G The story of how our body deals with damage and repair can be told through Kate's feet.
Watch Clip Lew Hollander, Triathlete 59s / TV-PG As Lew pushes himself, his body demands more oxygen to keep it going.
Watch Clip When Puberty Starts 1m 7s / TV-PG What determines when we start puberty has until recently been a mystery.
Watch Clip Danny McCaskill, Cyclist 1m 56s / TV-G Danny demonstrates how new motor skills must be learned and developed with practice.
Watch Clip From Day One, You Learn 1m 5s / TV-G From an early age, we learn how to control the movements of our bodies.