Around the World in 80 Weighs

What methods have the Japanese used to almost completely eradicate obesity?

In Tonga, the six traveling Brits reluctantly embrace a traditional raw fish diet.

In Texas, the tourists are shocked to find a whole industry for overweight residents.

In boiling hot Mumbai, the tourists face a testing week of vegetarian cooking.

It's the end of the global obesity quest, but did the travelers manage to lose weight?