Sleep Writing

I woke up this morning with this surprise beside my head.  I was falling asleep writing, flipped the page and wrote this (see pic).

I could not make out that last word... "Sleep is a ____"    I was hoping to unravel the mystery of what sleep was for me... then I solved it...

Very simple
 - I would like to feel good
 - Basically fall back where it all washes over you
 - Time slows
Things don't get untwined(?)
Sleep is a friend