Are you talking about this in regard to fungi or humans?

Human hibernation breakthrough that could send us to sleep for months.
27.05.07
"So far it has worked on pigs, sending them into a state of suspended animation for several hours.
But other researchers at the University of California, Los Angeles, and the Safar Centre for Resuscitation Research at the University of Pittsburgh, believe this could be stretched to days, then weeks, and months.
The scientists say those in hibernation will need to be fed intravenously on a drip-feed.
Hair and nails would still grow and hibernating people would still age, just like those who have fallen into a coma do.
The researchers also point out another potential difficulty: Human waste would have to be dealt with.
Of the animals that hibernate, only bears seem not to have this problem."
http://www.thisislondon.co.uk/news/article-23398281-details/Human+hibernation+breakthrough+that+could+send+us+to+sleep+for+months/article.do

See this link for the extraordinary process of bear hibernation:

The Bears of Winter.
"A bear may lose hundreds of pounds during the winter - 15 to 30 percent of its body weight - without really defecating or urinating. Instead, a bear recycles its metabolic waste. The urea, which is fatal at high levels, is broken down. The resulting nitrogen is used to build protein, which allows bears to maintain muscle mass and organ tissues.
"Some physiologists studying kidney diseases would love to understand that, and gain that insight in to how kidneys detoxify," Hechtel said.
Physiologist Tom Lohuis said the exact mechanisms are unknown, but it involves symbiotic bacteria in the bear's gut and a finely-tuned process that transports the nitrogen through the bear's system as it is recycled.
Lohuis said there is evidence that bears also "bulk up" different organs and muscles groups with stored protein, which bears need in addition to fat stores. One by-product of the breakdown of protein is water, which the bears use to metabolize their fat stores.
Fat breakdown provides bears with the calories they need, and fat is mostly carbon and hydrogen. Some of the waste is carbon dioxide and water, which they exhale."
http://www.wildlifenews.alaska.gov/index.cfm?adfg=wildlife_news.view_article&issue_id=12&articles_id=21

Bob Clark