잠잘 때 가끔 몸을 움찔하면서 깨는 이유는?

<span fr-original-style="color: rgb(3, 3, 3); font-family: Roboto, Arial, sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.2px; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: pre-wrap; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(249, 249, 249); text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;" style="color: rgb(3, 3, 3); font-family: Roboto, Arial, sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.2px; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: pre-wrap; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(249, 249, 249); text-decoration-style: initial; text-decoration-color: initial; float: none; display: inline !important; box-sizing: border-box;">잠을 자는 도중에 갑자기 몸을 움찔하면서 깬 경험이 있지 않으신가요? 많은 사람이 공통으로 경험하는 이 증상은 수면 놀람증이라고 합니다. 수면 놀람증은 왜 발생하는 걸까요? 그 이유에 관해서 알아봤습니다

https://youtu.be/8r6WUcFi8PI

<span dir="auto" fr-original-style="margin: 0px; padding: 0px; border: 0px; background: rgb(249, 249, 249); color: rgb(3, 3, 3); font-family: Roboto, Arial, sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.2px; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: pre-wrap; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;" style="margin: 0px; padding: 0px; border: 0px; background: rgb(249, 249, 249); color: rgb(3, 3, 3); font-family: Roboto, Arial, sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.2px; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: pre-wrap; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; box-sizing: border-box;"> * [오타] <a dir="auto" fr-original-style="display: var(--yt-endpoint-display, inline-block); cursor: pointer; text-decoration: var(--yt-endpoint-text-regular-decoration, none); color: var(--yt-endpoint-color, var(--yt-spec-call-to-action)); overflow-wrap: var(--yt-endpoint-word-wrap, none); word-break: var(--yt-endpoint-word-break, none); font-family: Roboto, Arial, sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.2px; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: pre-wrap; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(249, 249, 249);" href="https://www.youtube.com/watch?v=8r6WUcFi8PI&t=49s" spellcheck="false" style="display: var(--yt-endpoint-display, inline-block); cursor: pointer; text-decoration: var(--yt-endpoint-text-regular-decoration, none); color: var(--yt-endpoint-color, var(--yt-spec-call-to-action)); overflow-wrap: var(--yt-endpoint-word-wrap, none); word-break: var(--yt-endpoint-word-break, none); font-family: Roboto, Arial, sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.2px; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: pre-wrap; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(249, 249, 249); user-select: auto; box-sizing: border-box; outline: none;" target="_blank">0:49 <span dir="auto" fr-original-style="margin: 0px; padding: 0px; border: 0px; background: rgb(249, 249, 249); color: rgb(3, 3, 3); font-family: Roboto, Arial, sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.2px; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: pre-wrap; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;" style="margin: 0px; padding: 0px; border: 0px; background: rgb(249, 249, 249); color: rgb(3, 3, 3); font-family: Roboto, Arial, sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.2px; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: pre-wrap; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; box-sizing: border-box;">~ <a dir="auto" fr-original-style="display: var(--yt-endpoint-display, inline-block); cursor: pointer; text-decoration: var(--yt-endpoint-text-regular-decoration, none); color: var(--yt-endpoint-color, var(--yt-spec-call-to-action)); overflow-wrap: var(--yt-endpoint-word-wrap, none); word-break: var(--yt-endpoint-word-break, none); font-family: Roboto, Arial, sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.2px; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: pre-wrap; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(249, 249, 249);" href="https://www.youtube.com/watch?v=8r6WUcFi8PI&t=51s" spellcheck="false" style="display: var(--yt-endpoint-display, inline-block); cursor: pointer; text-decoration: var(--yt-endpoint-text-regular-decoration, none); color: var(--yt-endpoint-color, var(--yt-spec-call-to-action)); overflow-wrap: var(--yt-endpoint-word-wrap, none); word-break: var(--yt-endpoint-word-break, none); font-family: Roboto, Arial, sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.2px; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: pre-wrap; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(249, 249, 249); user-select: auto; box-sizing: border-box; outline: none;" target="_blank">0:51 <span dir="auto" fr-original-style="margin: 0px; padding: 0px; border: 0px; background: rgb(249, 249, 249); color: rgb(3, 3, 3); font-family: Roboto, Arial, sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.2px; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: pre-wrap; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;" style="margin: 0px; padding: 0px; border: 0px; background: rgb(249, 249, 249); color: rgb(3, 3, 3); font-family: Roboto, Arial, sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.2px; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: pre-wrap; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; box-sizing: border-box;"> 근강대성 경련 → 근간대성 경련