[flamesfever]

I recall flying down to Oregon to do some geology, and going 3 days without sleep. It was not until I got home that I started sleeping normally. I chalked it up to a combination of a new bed, environment (it rained the whole time I was there), and concern for the job I was doing (focussing too much without taking a break). Perhaps stop dwelling on the lack of sleep and read a book, until you eventually get tired, would help.

I have also found over the years that, while travelling, I routinely sleep poorly the first night, mainly because of a different bed.

Also, every now and then at home I will have the odd bout of insomnia that lasts a day or two that is hard to explain. I have heard that 70% of Albertans are affected by Chinooks, so maybe changes in the barometric pressure may play a part...just a guess.