This was our first trip to Hawai'i to visit Kayla and Tyler. We started out at the Moana Surfrider Hotel in Waikiki Beach in O'ahu from February 16th through 19th of 2016. We had quite a bit of jet lag and decided to get a spa massage.
The summit of the shield volcano is 10,023 feet above sea level, resulting in an atmospheric pressure (and density) about two thirds that at sea level, 10.1 psi to be more precise. Reduced oxygen pressure decreases the oxygen capacity of blood, causing fatigue sooner. Less air above to filter the sun's light means higher exposure to burning ultraviolet rays.