[mettamage]

> Did your sleep schedule naturally shift to become more more regular? If it did, then light therapy has a very high chance of helping you.

You just made me feel I might be on the brink of a startling discovery. Holy hell, I have tried a lot to improve sleep. I haven't tried this. And while there was one confounding variable in my case with camping, it did indeed shift my sleep rhythm to the day/night cycle of the country I was in!

[SiVal]

Also remember that when you're out camping, you're probably getting more exercise, too, not just sunshine. A walk in the sunshine is both walk and sunshine. The two in combination may explain more than sunshine alone.