You know when you were at school (a long time a go for some of us) you used to sit on the school hall floor for assembly and got a numb bum and pins and needles in feet.. well i get that all the time now. I know its normal to get it every now and again but if i lie on my arm funny for more than 30 seconds i get pins and needles. Or if im kneeling on my legs I'll get it really easily. I know its normal but surely only if you've been like it for 10-20 minutes not seconds!!