it doesn't matter how i sleep.
P.S. --- As far as the hand & arm numbness... are you putting your head on your arm when you sleep ?
In my opinion, the MCH is nothing of great significance. The potassium is a little low and usually people who have a very low potassium can have some weakness or leg cramps. It is quite common for lab results to go up and down, especially as our diet changes. You may want to ask your physician whether or not you should take a multi-vitamin.