Smerc and Mev, my sister tried some floating tank thing in a spa recently. Said that it really helped her and her husband to decompress.
I haven't been sleeping very well lately, surprise, surprise. Was thinking of checking it out to see if it might help me to de-stress. They said that they slept like babies afterwards that night.
Think you float in water in the dark. Sounds weird right, and a bit scary, but I believe the idea is to shut off all your senses so that you can't be over stimulated with all the chaos around you. Anyway, just thought I'd throw it out there. I'm willing to try anything at this stage!