I once had a friend who spent 6 hours a day for an entire winter in Southern Illinois riding his Monarch erg trainer in his tiny trailer with the heat turned off, in the dark, naked (it got phenomenally hot and steamy in there), the seat coated with vaseline. I remember wading through the snow to his trailer one night. The lights were off, the windows were coated with steam. And the trailer was shaking back and forth and roaring along like an airplane ready to take off.
Another funny thing: my friend (I won't use his name -- but he was a well known racer in the midwest) lived on yogurt that he made himself in gallon jugs that sat up by the ceiling above his trainer in his trailer. Essentially, he had turned his trailer into a huge human powered yogurt maker.