For anyone who’s experienced it, the frustration can be miserable. The countless tossing and turning, the minutes that tick by (turning into hours), and you STILL haven’t gotten a modicum of decent sleep. No matter how hard you try to ignore it, that urge to constantly move or stretch your legs just won’t let up.

(This Mark's Daily Apple article was written by Mark Sisson, and is narrated by Tina Leaman)