Joel and Nish travel to Tokyo to meet Japan's professional sumo wrestlers before heading to the remote Oki Islands to take part in a tournament in the birthplace of Sumo.

Joel and Nish venture to Mexico to the land of Tarahumara; the legendary tribe people of north-western Mexico who are renowned for their long distance running ability, which Joel will attempt to achieve.

Comedians Joel Dommett and Nish Kumar see if Joel's ludicrous fitness regime can prepare him for life with Mongolian Nomads.

Joel and Nish are in Japan learning the ways of the Kodō, a taiko drumming troupe based on Sado Island. But it won't be all song and dance as the pair will be pushed to their physical and mental limits, training with some of the toughest and most ruthless musicians in the world.

Joel and Nish spend a week in the tough, no-nonsense world of the Argentinian Gauchos, learning how to horse ride and herd cattle across the South American Pampas.

This week Joel and Nish venture to meet the Massai Warriors of Kenya.