With steam saunas you have to be sure the spouts are clean. I stopped going to my gym's steam sauna for that reason.
For infrared you have to be sure EMFs are low. I made my own by snooping around on the internet. Ben Greenfield among others have stated saunas work your body similar to a light cardio workout.
For infrared you have to be sure EMFs are low. I made my own by snooping around on the internet. Ben Greenfield among others have stated saunas work your body similar to a light cardio workout.