In Japan, the group throw themselves into the national diet, and Russ strips off for a Sento bath.

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. Have they achieved their goals?