The second episode of the series, Around the World in 80 Weighs, which will air tonight, sees follows six people, all overweight, from around the UK travel to Tonga.
A bustling market in Tokyo and locals are minding their own business, browsing stalls or rushing to work - until a group of obese visitors stroll past and stop them in their tracks.
Toxic apps, a legal obligation to complete a morning exercise class, and having your waistline measured by employers could render Japan s approach to weight management draconian.
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