Hypnic jerks, the sudden muscle twitches that often come with a falling sensation at sleep onset, are common and are reported by roughly 60 to 70 percent of people.

Is it true that Hypnic jerks, the sudden muscle twitches that often come with a falling sensation at sleep onset, are common and are reported by roughly 60 to 70 percent of people?

Yes. Two reference sources state that hypnic jerks (hypnic myoclonia) occur at sleep onset and are experienced by roughly 60 to 70 percent of people, matching the claim's prevalence range.

Verdict: SUPPORTED · 3 sources for, 0 against · Last checked 3 Oct 2026

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Hypnic jerk. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Hypnic_jerk

Hypnic jerks are an underestimated sleep motor phenomenon in patients with parkinsonism. A video-polysomnographic and neurophysiological study. (2016). doi.org. https://doi.org/10.1016/j.sleep.2016.07.011

乳幼児期に舌咬傷を繰り返したHypnic Myocloniaの1例. (n.d.). cir.nii.ac.jp. https://doi.org/10.11411/jspd1963.45.1_103