If I Yawn, Does That Mean I Am Tired?
This content was created by the National Sleep Foundation.
Yawning can be caused by several factors besides sleepiness.
A classic symptom of fatigue, yawning can sometimes be a sign that your body is ready for sleep. It’s a common occurrence: Animals yawn, babies yawn, and adults yawn. But a yawn is not necessarily a sign that you are tired—check out these other potential causes.
1. Monkey See, Monkey Do.
The act of yawning is contagious. If you see someone yawn or read about yawning, you might do it yourself. This involuntary imitation may be related to the evolutionary history of yawning. A nonverbal cue that says it is time to relax, the trait may have been selected over time because it helps people coordinate their reactions to a changing environment with a larger group—changes like, say, darkness or the absence of a threat. So this is more of a social reason than a biological one.
2. You’re Compassionate.
People who have very empathetic personality traits and feel what others around them feel are more likely to mimic a yawn when they see other people yawning.
3. Your Brain is Hot.
Yawning may help regulate brain temperature. A warm brain might signal the body to yawn, which flexes walls of the sinus cavity and helps cool the important organ.
4. You’re Bored.
Without stimulation, people can start to feel sleepy. In other words, if you're staring at a wall, you're more likely to yawn than if you're watching a loud, bright music video on television.
5. You’re Preparing To Move.
Because it is linked to actions such as muscle stretching, joint movement, and an increased heart rate (think early morning waking), yawning may be part of the body’s way of gearing up for activity.
6. Your Body Wants You To Know Something Is Up.
It is not common, but in some cases, such as in people with epilepsy, yawning can signal an upcoming episode. In rare cases, excessive yawning may be a secondary symptom of a disease such as Parkinson’s or multiple sclerosis. However, underlying disease is not a common cause for this routine, normal response.
Lions sleep more than most other animals. Learn where, why, and how lions spend so much of the day sleeping.
Since contact lenses reduce moisture in your eyes, in most cases you’ll just wake up with dry eyes if you sleep with contacts in. There are, however, some more serious side effects that can result from overnight contact use. Extended contact use deprives your eyes of oxygen, causing unnecessary strain to the cornea. Wearing contacts lenses too long can potentially damage your cornea’s surface, making your eyes more susceptible to infection. You’re as much as 6 to 8 times more likely to acquire an eye infection when wearing contact lenses while sleeping, whether you fell asleep with them in intentionally or not. Adolescents and young adults are more prone to developing contact lens-related eye infections, which is attributed to less rigorous hygiene.
Bedtime face washing is an important part of your nightly routine. It helps prevent breakouts and creates a relaxing ritual.