2 doctors weighed in:
What do you call that weird spasm you sometimes get when you are just about to go to sleep?
2 doctors weighed in

Dr. Albert Pizzo
Family Medicine
1 doctor agrees
In brief: Spasm
Activation of the reticular activating system in the brain.
This is the switch from wake to sleep that oftens causes a big jerk to occur in the muscle system.

In brief: Spasm
Activation of the reticular activating system in the brain.
This is the switch from wake to sleep that oftens causes a big jerk to occur in the muscle system.
Dr. Albert Pizzo
Dr. Albert Pizzo
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