frequency of the jerks. However, conclusive research on this topic is missing. It is also important to note that intense physical activity or strenuous exercising may also lead to hypnic jerks.
One possible hypothesis is that these jerks are a natural aspect of the body’s journey from alertness to sleep phase and happens when the nerves “misfire” during this process.
Another stand is that the spasms are an ancient primate reflex to the muscle relaxation happening during the onset of sleep and the brain misinterprets the relaxation for a sign
