Proper use of sauna Help?

You want to be careful for the duration of time in a sauna. Typically you can limit yourself to 15-20 minutes. The sauna is designed to elminate impurities from your body through sweating. Just make sure you drink plenty of water. If you start feeling dizzy or like you might faint then you know you have been in long enough. I would not recommend doing exercises in the sauna, however.