Well my Dad told me about some of the crazy exercises he went on whilst in the parachute regiment (British Army). One of them was when they were in Norway for training in extreme cold, and to keep warm they warmed their feet in each others armpits and generally just cuddled up.
Sort of like big burly penguins.
Another one he told me about is something that he described as an exercise but it sounds like a prank. Basically, they were dropped off naked on the opposite side of the town near their barracks and need to get back to the barracks together. He told me that him and his mates cheated and just got a taxi together. I bet you would of let them ride for free .