In New Zealand, Jeff immerses himself in Maori culture, and pushes past his comfort zone by navigating an underground river, playing rugby, and braving whitewater rapids.

Jeff adventures in Japan and takes on his biggest challenges yet, training with a sumo wrestling champion and learning the martial art of Kendo.

In Mexico, Jeff prepares for his whale shark swim by training in a cenote and learning how to drift dive in Cozumel.

In The Adirondacks, Jeff prepares to climb a mountain by training his body and mind with champion timbersports competitors.

While exploring Vietnam, Jeff tests his endurance, his balance, and his taste buds before facing his biggest fear: walking into the clouds.

In New Mexico, Jeff tests his fear of heights and soars in a hot air balloon but first, hell need to survive a plunge in fierce rapids while kayaking.

From catching king crabs to dancing with king penguins, Jeff Jenkins explores the rugged beauty of southern Patagonia.

In Iceland, Jeff hikes over glaciers and paddle boards in an icy lagoon before jumping to the other end of the world to explore the Amazon.