Reminds me of some old rules;
- never break a light ray (from the sun).
- Don't look into the sun, unless it is up wind.

Both hold some merit, I've found that when the sun is in my face I move alot more to make attempts at seeing better. Probably not a good thing.

I'd say, get in the shade, and if you have my luck, you will, and then it will be really cold and you'll wish you were in the sun!

Have fun...