Fatties survive in the military because everyone's too soft and afraid to do anything about it. At worst, they get put on remedial fitness training and are required to do certain extra PT things. It doesn't help that they're still allowed to cram whatever shit they want down their throats.
It's not a serious problem because fat people can still do their jobs (for the most part). They can usually pack with more gear and last longer. Most combat units will wash them out of their platoon/company if it's serious enough that it's combat effective.
Fat people that can't carry their own weight in combat roles outside the wire usually end up in other trades, doing jobs that require less physical activity, which encourages them to get even fatter.
PT tests are a joke and are built to push everyone through for numbers.
They fucking embarrass me, but it's not the end of the world.
End fucking thread.