@FreakyFwoof Ah. So in hyperbaric treatment when they pressurize the chamber, they virtually “dive” to 45 feet. I stay at that pressure for 2 hours and then “surface” over a five minute period. Though it’s not a real dive, they call it that cause pressures are very real. That’s what helps push mor o2 to my body, and helps promote healing, sometimes miraculously so. Descent is the hardest for me because I have to actively clear my ears.