Yawning is commonly associated with tiredness, but the exact reasons for yawning remain debated among experts. One perspective suggests that yawning may function similarly to stretching, as it often occurs when individuals wake up or have been inactive for a while. This observation highlights a potential link between yawning and the stretching of internal and jaw muscles rather than merely serving as a mechanism for increasing oxygen intake. Some individuals report being able to yawn at will or suppress yawning, which can be beneficial in certain situations, such as managing pressure changes while driving in mountainous areas. The discussion also touches on the evolutionary aspect of yawning, suggesting that since all humans yawn, it must confer some advantage, implying that those who did not yawn may have faced disadvantages in survival.
