Overview: Chris learns to tame his stress response while attempting a terrifying crane walk.
Overview: Chris heads to the icy Arctic in his search for health and longevity.
Overview: One man. Four days. No food. But can fasting make Chris live longer?
Overview: Chris discovers how his muscles can help him live longer with an epic rope climb.
Overview: Chris has always worked to keep his body healthy; now it's time to challenge his brain.
Overview: Chris' quest for eternal youth fast forwards him to the end of life.