@skylark1 and also if you have GERD or acid reflux do not sleep on your stomach. That's how my doctor says mine happened. I was a stomach sleeper and the acid aspirates into your lungs at night if you're on your stomach, hence, sleeping on a wedge is important or a bunch of pillows. I found a great wedge in the catalog Hammacher Schlemmer that is not such a huge angle as my first one which I hated because it as so big and bulky. I also have a hiatal hernia which doesn't help matters. Nan