Sauna's... Good or bad? What exactly is their purpose?

[Chicago Made]

I use it at the gym and I do feel good coming out of it, but what is it supposed to do?

Can it help get eleviate bloat?

Does anyone else use them?

 

[MattyBoy682]

I do it after leg day because I feel it helps break up lactic acid, and I am not as sore in the coming days.