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