Our ancestors crossed deserts, mountains, and oceans without even a whisper of what anyone today might consider modern technology. Those feats of endurance now seem impossible in an age where we take comfort for granted. But what if we could regain some of our lost evolutionary strength by simulating the environmental conditions of our forbears? Investigative journalist and anthropologist Scott Carney takes up the challenge to find out: Can we hack our bodies and use the environment to stimulate our inner biology?

Deep is a voyage from the ocean's surface to its darkest trenches, the most mysterious places on Earth. Fascinated by the sport of freediving - in which competitors descend to great depths on a single breath - James Nestor embeds with a gang of oceangoing extreme athletes and renegade researchers. He finds whales that communicate with other whales hundreds of miles away, sharks that swim in unerringly straight lines through pitch-black waters, and other strange phenomena.

Wim Hof has a message for each of us: “You can literally do the impossible. You can overcome disease, improve your mental health and physical performance, and even control your physiology so you can thrive in any stressful situation.” With The Wim Hof Method, this trailblazer of human potential shares a method that anyone can use - young or old, sick or healthy - to supercharge their capacity for strength, vitality, and happiness.

Imagine a breathing technique that can increase oxygen uptake and delivery to the cells, improve blood circulation, and unblock the nose. Perhaps it can help open the airways of the lungs, enhance blood flow and oxygen delivery to the brain, improve sleep, and bring calmness to the mind. It might even restore bodily functions disturbed by stress, build greater resilience, and help you to live longer. You might think this description sounds farfetched. But it isn’t.

In 2012, 38-year-old Ian Thorson's search for spiritual transcendence ended in tragedy on a remote Arizona mountaintop. His wife, a woman anointed as a goddess by an eccentric Buddhist community, held him in her arms as he slowly died from dehydration and dysentery. For Scott Carney, a journalist and anthropologist who lived in India for six years, Thorson's death was just the most recent iteration of an unspoken epidemic that connected intensive meditation and mental instability.