i had the same problem and it arose because i was using my left arm under my pillow when i slept on my side, both tension and lack of blood flow affects the nervous system, after days of stretching exercises and praying i got my stregnth back.
Posted By italo abate on January 16, 2008 at 23:49:57:
In Reply to: left arm numbness
posted by Alpay Orcan on December 11, 2007 at 18:50:25: