Apr 16, 2009, 6:39 PM. i was at beijing, xian and shanghai end november/early december last year. it was chilly in beijing and xian. about 7-10 degrees in the day and close to freezing point at night, but still manageable. further south in shanghai, it was rather warm, actually.
Possible Causes of Numbness While Sleeping. Numbness while sleeping can be among the causes of insomnia when the loss of sensation interferes with the ability to stay asleep through the night. Pinpointing the cause of the problem can lead to a viable solution.
Carpal tunnel: Carpal tunnel syndrome is one of the most common causes of numbness in the hands (palms and fingers). Usually, the thumb, index and middle fingers are involved, but frequently people report numbness in the entire hand. Wearing wrist splints at night usually helps. You may want to try those.