Many retirees would love to retire somewhere warmer with a beautiful coast and a reasonable cost of living. Puerto Vallarta, Mexico, is one of the options many retirees may want to consider. There are several challenges to consider such as the difficulties with Medicare in foreign countries and the different income tax situations.
The air pressure inside a human body is roughly equivalent to the pressure of the atmosphere. Normal air pressure is about 13.7 pounds per square inch at sea level.
Regarding the first point: Humans are frequently subjected to 8 bars of pressure in hyperbaric medicine, which means that, over a period of time, the human body can go from a pressure of 8 bars to 1 bar, a difference of 7 atmospheres. This happens very slowly. If this were to happen quickly, terrible things happen.