After a 4 day training exercise with the Officer Training Corps, which involved two days as platoon commander (thus virtually no sleep at all) and one terrible case of dehydration (Top tip kids - always hydrate rations correctly, remember if it's still crunchy no munchie munchy) I collapsed against the radiator in my room in studentville in filth-covered uniform, with my big backpack on, cam-cream still on my face and hands...
Woke up well over 24 hours later, "stiff" is an understatement... face covered in drool... hungry as hell and with a greater compulsion to make my way to the toilet than I have felt before or since. Shame my legs didn't follow orders.