[Red Badger]

Robinson asked to be put in solitary and could not be sure if his food was poisoned by the other prisoners so could only eat the commissary food prisoners are allowed to purchase leading to 40 pounds of weight loss during his ordeal last summer.

Dang! Where do I get me some of that? I need to lose 40-50 pounds ASAP!..............

[buwaya]

All you need is a Japanese POW camp, like Cabanatuan.
They were very good at this sort of thing. Hard labor in the tropical sun plus a diet of rice gruel with okra.

Or even a civilian internment camp such as Santo Tomas.

https://en.wikipedia.org/wiki/Santo_Tomas_Internment_Camp