My upper arms have done this off and on through the years, but here lately they've been doing it every night. I wake up over and over again all through the night to readjust my sleeping position because my arms alternate between being asleep or hurting. Sometimes parts of them are numb PLUS they hurt in the parts that aren't numb. I usually sleep on my sides/arms, once in awhile my back and never my stomach. My husband says he has trouble with this, too. He and I are both overweight and I wonder if that has anything to do with it. I'm 5' 8" and weigh 230 and he's 5' 10" and weighs 215. I have Peripheral Neuropathy, so I'm wondering if it could be that, too. One night I went to bed several hours before my husband did and he said in just a few hours I must have rolled over from side to side about 100 times. Anyone else have trouble with their arms?