E
ell
Guest
Why do we yawn and what does it do? You know, when you're tired you yawn, but have you ever thought of why?
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O
Original Gam3r
Guest
When you yawn, it means your brain needs oxygen.
C
chris p
Guest
one theory is to clear out some of the unused and stale capacity of the lungs to give you a boost of oxygen.
it also pops your ears, and stimulates your salivary glands. for a practical use for yawning, www.wikihow.com/Gleek
its gross but it finally gives us a good use for yawning lol
it also pops your ears, and stimulates your salivary glands. for a practical use for yawning, www.wikihow.com/Gleek
its gross but it finally gives us a good use for yawning lol
P
punk101
Guest
Hi there : )
Yawning is as contagious as measles and as common as a cold. Just thinking about it can trigger a yawn.
Yawning is often connected to sleepiness, but experts say that's not always the cause. A yawn lasts about six seconds. It can signal boredom, anxiety or even hostility. There's a greater than 50 percent chance that you will yawn just because you see someone else doing so.
Yawning is not just a human response. Most animals yawn, including fish, birds, rats and snakes. Even fetuses have been observed to yawn in the womb.
A good yawn has some benefits. It exercises our jaw and facial muscles and stretches our lungs. It also increases blood flow to the brain, raises our heart rate and helps with breathing. The result is that we feel a little more awake afterwards.
The reason we yawn is not completely understood. One theory is that it is a protective reflex. When we yawn, we redistribute a chemical that helps lubricate our lungs. If we never yawned, taking a deep breath would be harder.
Frequent yawning can be linked to some illnesses. These include multiple sclerosis, Lou Gehrig's disease, heart problems or Parkinson's disease. If you have a cold, allergy or sinus problem, you may find yourself yawning more than usual, too.
Some believe that ancient tribes yawned to synchronize sleep times. Because the yawn is contagious, it helped tribe members to fall asleep at the same time. All of them would then be ready to start hunting at the same time. Another theory is that yawning was a sign of aggression among early men. The flashing of the open mouth and teeth warned others not to attack while they were sleeping.
i hope this answers your question.
Yawning is as contagious as measles and as common as a cold. Just thinking about it can trigger a yawn.
Yawning is often connected to sleepiness, but experts say that's not always the cause. A yawn lasts about six seconds. It can signal boredom, anxiety or even hostility. There's a greater than 50 percent chance that you will yawn just because you see someone else doing so.
Yawning is not just a human response. Most animals yawn, including fish, birds, rats and snakes. Even fetuses have been observed to yawn in the womb.
A good yawn has some benefits. It exercises our jaw and facial muscles and stretches our lungs. It also increases blood flow to the brain, raises our heart rate and helps with breathing. The result is that we feel a little more awake afterwards.
The reason we yawn is not completely understood. One theory is that it is a protective reflex. When we yawn, we redistribute a chemical that helps lubricate our lungs. If we never yawned, taking a deep breath would be harder.
Frequent yawning can be linked to some illnesses. These include multiple sclerosis, Lou Gehrig's disease, heart problems or Parkinson's disease. If you have a cold, allergy or sinus problem, you may find yourself yawning more than usual, too.
Some believe that ancient tribes yawned to synchronize sleep times. Because the yawn is contagious, it helped tribe members to fall asleep at the same time. All of them would then be ready to start hunting at the same time. Another theory is that yawning was a sign of aggression among early men. The flashing of the open mouth and teeth warned others not to attack while they were sleeping.
i hope this answers your question.
P
punk101
Guest
Hi there : )
Yawning is as contagious as measles and as common as a cold. Just thinking about it can trigger a yawn.
Yawning is often connected to sleepiness, but experts say that's not always the cause. A yawn lasts about six seconds. It can signal boredom, anxiety or even hostility. There's a greater than 50 percent chance that you will yawn just because you see someone else doing so.
Yawning is not just a human response. Most animals yawn, including fish, birds, rats and snakes. Even fetuses have been observed to yawn in the womb.
A good yawn has some benefits. It exercises our jaw and facial muscles and stretches our lungs. It also increases blood flow to the brain, raises our heart rate and helps with breathing. The result is that we feel a little more awake afterwards.
The reason we yawn is not completely understood. One theory is that it is a protective reflex. When we yawn, we redistribute a chemical that helps lubricate our lungs. If we never yawned, taking a deep breath would be harder.
Frequent yawning can be linked to some illnesses. These include multiple sclerosis, Lou Gehrig's disease, heart problems or Parkinson's disease. If you have a cold, allergy or sinus problem, you may find yourself yawning more than usual, too.
Some believe that ancient tribes yawned to synchronize sleep times. Because the yawn is contagious, it helped tribe members to fall asleep at the same time. All of them would then be ready to start hunting at the same time. Another theory is that yawning was a sign of aggression among early men. The flashing of the open mouth and teeth warned others not to attack while they were sleeping.
i hope this answers your question.
Yawning is as contagious as measles and as common as a cold. Just thinking about it can trigger a yawn.
Yawning is often connected to sleepiness, but experts say that's not always the cause. A yawn lasts about six seconds. It can signal boredom, anxiety or even hostility. There's a greater than 50 percent chance that you will yawn just because you see someone else doing so.
Yawning is not just a human response. Most animals yawn, including fish, birds, rats and snakes. Even fetuses have been observed to yawn in the womb.
A good yawn has some benefits. It exercises our jaw and facial muscles and stretches our lungs. It also increases blood flow to the brain, raises our heart rate and helps with breathing. The result is that we feel a little more awake afterwards.
The reason we yawn is not completely understood. One theory is that it is a protective reflex. When we yawn, we redistribute a chemical that helps lubricate our lungs. If we never yawned, taking a deep breath would be harder.
Frequent yawning can be linked to some illnesses. These include multiple sclerosis, Lou Gehrig's disease, heart problems or Parkinson's disease. If you have a cold, allergy or sinus problem, you may find yourself yawning more than usual, too.
Some believe that ancient tribes yawned to synchronize sleep times. Because the yawn is contagious, it helped tribe members to fall asleep at the same time. All of them would then be ready to start hunting at the same time. Another theory is that yawning was a sign of aggression among early men. The flashing of the open mouth and teeth warned others not to attack while they were sleeping.
i hope this answers your question.