"To endure the bite of the fox..."

In the same vein as "Its all in the mind you know...", I was wondering what people do to acclimatise to any discomforts/pain they might encounter on the trail, especially for longer trips?
I know of two climbers who slept in a industrial freezer every night for a month before they left
, people who sleep on the floor on a closed cell foam mat, and I haven't had a hot shower (brrrrrr) for 13 days now in preparation for my coming trip.
What does everyone else do?
Dave
I know of two climbers who slept in a industrial freezer every night for a month before they left


What does everyone else do?
Dave