VinRouge,
Sure, I can think of a few extremely fiot folk who collapse, but they do that wherever they are.. and lets not confuse medical with physical fitness either. Folk who look after themselves are more likely to have increased stamina, powers of concentration and they can operate far longer too.
We should all aim for as high a standard of physical fitness as possible, and not simply accepting of 'getting by'. I'm not advocating silly extremes, but there is not much margin for safety in just in getting by. Detachments are getting longer and longer and the demands are getting greater and greater. I cannot see any problem in a test which might last as long as it takes to read this thread, highlighting any problems in/to someone.