Around the World in 80 Weighs

Six Brits who are living with obesity are off on a jaw-dropping world tour to lose weight. The group throw themselves into Japan's national diet, and Russ strips off for a Sento bath.

Six Brits who are living with obesity continue their fact-finding global journey. In Tonga, the group meet the crusading Ofeina and reluctantly embrace the traditional raw fish diet.

In Texas, the tourists are shocked to find a whole industry for overweight residents but it's a struggle to find simple fresh food. And tensions in the group finally boil over at a barbecue.

It's boiling hot in Mumbai for the tourists who face a testing week of vegetarian cooking. At the Yoga Institute new ways of thinking are explored prior to heading home.

After their globe-trotting adventures, the tourists head home to the UK and back to reality.