Does sleeping immediately after eating cause weight gain? some tell me this is just a myth. im not eating an extra meal, just eating my dinner late

Eat late- raise wt: Research suggests it's not sleeping after eating but eating late that causes weight gain- those who eat late ; stay up for several hours after gain more weight. I don't advise sleeping immediately after eating- stay sitting or standing at least an hour to avoid reflux. See http://www.Webmd.Com/diet/news/20110614/eat-late-gain-weight ; my comment for another link.