Hi Helen. I love a good sauna now and then. I think they do help with muscle stiffness and soreness after a workout and are good for general wellbeing as well because they make you sweat and all kinds of body baddies come out in your sweat. I like to do a little gentle stretching in the sauna and a bit of self massage.
As for attire, I wear my bathers and take a towel - some have a practice where they expect you to take a towel in to sit on, which makes sense
I know I'd rather sit on my own towel than a wooden bench where other sweaty bottoms have been
In relation to weightloss, it's only temporary as you sweat out fluids. Jockeys use them before a race and other sports people too when they compete in a particular weight class (e.g. boxers, martial artists etc.) As soon as you have a glass of water, you gain back any 'loss'.
Hope this helps
Just keep moving! And don't be lazy...
SW: 74.3kg - 1/1/09
CW: 71.1kg - 3/5/09