Back Support Mattresses

What is a great back supporting mattress?  The key to good support is sleeping flat.  The best mattresses for back pain relief, pressure point relief, sciatica relief, hip pain, shoulder pain, etc., is a foam mattress.  But most foam mattresses are made of plastic which softens quickly with use and thus loses its support, i.e., it no longer sleeps flat.  In this video I explain what plastic foam is, how quickly it softens, and then show you what really works.