When you are experiencing low back pain, your first instinct may be to crawl into bed. Until a few decades ago, you doctor probably would have told you to do exactly that. But the tide has turned on our understanding of what is best for tackling back pain, and now the consensus is this: When you have back pain, you should limit or avoid bed rest.
 

http://www.spine-health.com/blog/bed-rest-not-always-best-bet-beating-back-pain