Yawns can be caused by boredom. When watching an uninteresting performance, movie, or recital a person may have a bout of excessive yawning. To suppress the yawns, he can hold his mouth closed tightly and clench his jaws. When the yawn comes on he must keep the pressure in the rear of his jaws and swallow the yawn. Excessive yawning, caused by sleepiness, can be counteracted by drinking lots of water. Dehydration is a big cause of fatigue. When a person drinks a lot of water, the yawning will cease. Every time the urge to yawn is strong, drink a big gulp of water and the yawn will pass.
According to the Jet Airliner Crash Data Evaluation Center, JetBlue ranks as the safest U.S.-based air carrier, as of publication. Southwest, Delta, United and American Airlines round out the top five in U.S. safety ratings.
Given the number of lives lost in 2014 due to airplane crashes, it may seem a bit cynical to review a report on airline safety. However, an airline safety rating website recently announced its list of the worldâs safest airlines for 2015, and we noted that two U.S. carriers are among the safest carriers in the world. The AirlineRatings.com website listed both a top 10 and a low-cost top 10, made up from the staffâs review of the 449 airlines they monitor.