Because it's a tremor. This is the name for trembling in some parts of the body. Tremor ranks first among all seizures and other abnormal movements. Most people get it. And that's usually okay.
The tremor can be in some part of the body, such as the head, arm, lower jaw, or even in the voice. Literally a tremor in my voice. Sometimes half of the body trembles. It happens that the whole body trembles.
Sometimes the tremor appears in a calm state, when a part of the body just lies and does not touch anyone. And sometimes you need to move a part of your body to trigger a tremor.
There is a tremor that is noticeable only in a certain position of the body and depends on the posture.
Sometimes muscles tremble during isometric exercise. Well, that is, when the muscles are tense, but the movement in them is not visible. If, for example, hold the iron at arm's length. Have you tried this? The hand starts to shake. This is a tremor.
It is clear that there are dozens of diseases in which a person will tremble somewhere. This is what a neurologist does.
Tremors in healthy people
More interesting is the so-called physiological tremor. In general, all people have it.
Yes, brothers, you and I are all shaking with small tremors with a frequency of about 10 - 12 per second. Only we do not notice this, because such a physiological tremor is very low-amplitude. That is, such a small tremor that it is not noticeable.
But sometimes it is noticeable. There are people who know how to show their physiological tremor to others. To do this, they only need to slightly irritate their sympathetic system.
The sympathetic nervous system is triggered when we are active, running, saving. That is, adrenaline and all that.
Sometimes drinking coffee is enough to whip up the sympathetic nervous system.
By the way, if blood sugar drops, then in people hands are shaking too. This is due to adrenaline trying to fight insulin.
It is clear that you can just get drunk for some reason, and your hands will also shake.
In short, normal people can have something trembling. This something will tremble with adrenaline. This something is more likely to tremble when trying to move, but not in a calm state, lying on the couch.
So your head can shake after stress. You don't have to be sick for this. It's just that your native physiological tremor becomes more noticeable.
To prevent this from appearing, it is better to freak out less, not get involved in appropriate situations, limit tea, coffee and other stimulating things.
If your head is shaking right now and is interfering with your life, then try pressing your chin to your chest or turning your head to the side. So the tremor is reduced.
Dentist
This is a separate story in case your head shakes. Warn your dentist that you may experience tremors from adrenaline while under anesthesia.
Ask for a break during dental procedures so you can stretch out.
There, the dentist still has all sorts of devices that help keep the mouth open and not shaking. Well, or an assistant can hold your head so that you do not shake too much. This is fine. It happens.
Clear?
