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 syndrome. Carpal tunnel syndrome can cause your hands to fall asleep at night and make you wake up with numb hands. Carpal tunnel syndrome is caused when pressure on the median nerve in your wrist which results in numbness, tingling, and weakness in your hand.