Why right side? It doesn't seem to make any difference lately how I sleep. I still wake up 4 or 5 times a night with pins and needles in which ever side I lay.@Mrblue
Sleeping on the right side does not let the weight of stomach & intestine to suppress heart, hence blood circulation is not affected.
By sleeping on the right side, the heart remains in the topside, one will not have a deep sleep. A little noise can prepare some one to face any contingency. It also develop the habit of early morninng rise