Yawning may signal changes in state of being Yawning appears to occur when people are in a state of transition, particularly sleep-wake transitions — when they wake up or when they are drowsy ...
excessive yawning could be a symptom of any underlying disorder. Sleep deprivation is one of the reasons for excessive yawning. Stress, insomnia, sleep apnea, and narcolepsy too are causes of ...
"We often yawn frequently before we go to sleep or after we wake up," Gallup said. "Yawns have been shown to increase arousal and alertness as associated with these state changes." Research also ...
Mediterranean countries have long since been proponents of the siesta, or afternoon nap. Psychologist and medical practitioner Dr Jonathan Redelinghuys said that a bit of daytime shuteye is an ...