As some others have pointed out, HDMI is a digital standard which means your HDMI cables just transmit data - 1's and 0's. There is no 'high fidelity' version or any qualitative difference like there was with cables back in the analog days. They either work or they don't. So if you've just spent $800 for a new surround receiver or large screen TV, just get as many of these as you need in the length you need. Even if you've got a couple of old HMDI cables that you 'think are good', just consider replacing them so you're sure you have the latest standard. For $6 or less is not even worth trying to figure out what those old cables are.

Natural Calm seems to be helping a long running nerve issue diagnosed as Thoracic Outlet syndrome. Essentially a pinched nerve bundle between the middle and anterior scalene muscles. Muscle spasms down the entire left side of the body from the neck to the traps and down the back. Natural Calm seems to be helping the symptoms and reducing stress which is a major contributing factor to the pain.