The hypnic jerk may be a result of the muscles relaxing as the body goes to sleep. The brain misinterprets this as a sign of falling and signals our limbs to wake; hence the jerking legs or arms.
They say it's not fully understood but w/e it's normal
Is it normal to be in bed and jerk cuz it feels like your falling
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Hypnic jerk
The hypnic jerk may be a result of the muscles relaxing as the body goes to sleep. The brain misinterprets this as a sign of falling and signals our limbs to wake; hence the jerking legs or arms.
They say it's not fully understood but w/e it's normal