Sleep and me.

Its odd that yor hearing is the last sense to go before you drift into sleep this may be due to our hunter gathers days but i may be wrong.I never know when i have gone asleep but somehow my brian wkes me up to do bodyly functions or lets worries or stress of day come forward so i have a restless night and i get the inbeween sleeep time -half asleep and part awake and world seems less real.Irelax by puting on radio and keeping warm or col to aid sleep.