Not Allowed To Raise Your Arms??

Ashley
As soon as my mum found out I was pregnant she started giving me all this weird "advice" but the one that stuck out to me as the most odd was this:
"Oh, after you're in the second trimester you can't reach your arms over your head because you'll make the cord wrap around the baby's neck!"
Has anyone else ever heard that?? (I don't believe it, not one lick, but I wondered if it was a common wives tale or something...)