Human Made "Sweat Box"???

In Arizona, a sauna-like "sweat box" was created, and many people participated. So far, 3 people have died from this, and 18 people have been injured.

The Sheriff's officer said:

Participants spent up to two hours inside the sweatbox, a dome-like structure covered with tarps and blankets

I think it is ridiculously stupid to do something like this. Why risk your life if you could do the same thing and probably have a better treatment and outcome by paying some money to do this "professionally"? The maker of this took the lives of 3 people and injured many others; is that seriously worth it? My advice to you: if something has already been invented and made to your convenience, use that and don't act mindlessly and create your own, especially when it is already available.