Might be that your sleep was just short of a single cycle (1~2 hours usually) which, from what I understand, could feel the same as no sleep at all. Sleeping sh

Might be that your sleep was just short of a single cycle (1~2 hours usually) which, from what I understand, could feel the same as no sleep at all. Sleeping short chunks is probably only viable if you can be sure to fully complete a cycle every time.