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.
KLM has a reputation to be one of the safest airlines in the world, and has a large social media presence. Part of the Air FranceâKLM group, it is a member of the SkyTeam airline alliance. It uses Flying Blue as its frequent-flyer program, and has codeshare agreements with both SkyTeam members and non-SkyTeam members.s of June 2015, the KLM fleet (excluding all subsidiaries) consists of the following aircraft: The Boeing customer code for KLM is 06. The Boeing 737 Next Generation aircraft are delivered with Boeing customer code K2, used for Transavia.