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.
Sleeping on Your Arm. Sometimes the cause of a tingling hand or arm is simply the result of sleeping on your arm or hand for a long period of time. The pressure of your body's weight can disrupt nerve pathways and circulation to that particular part of the body. The brain then isn't sure how to respond.