Thanks for the replies everyone. A fever chill woke me in the night, and this morning I awoke hot and sweaty with an unsettled stomach. If I didn't know better I would say I was hung over. Must be a mild bug, so last night's anxiety probably was just part of it coming on.
I have used binaural beats in the past but haven't thought of them in years.
This is a very beautiful part of the world. I haven't been to Tofino in quite some years, but I have fond memories of staying at the Wickaninnish Inn there and going to sleep with the sound of the surf rolling around us all night.