Related terms:
valsalva maneuver
navy submarines
officers and enlisted
patrol insignia
eustachian tubes
submarine insignia
undersea warfare
yawning
submarine escape
while sitting
steinke hood
toilet bowl
pulse rate
morgagni
pressure chamber
submarine service
straining
toilet seat
Wikipedia sources:
Valsalva maneuver
Submarines in the United States Navy
Giovanni Battista Morgagni
Toilet-related injuries and deaths
Context for words:
valsalva
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