Well done, Finland.
Saunas are hands down the greatest thing to come out of Finland.
There are over 2 million saunas there.
And Finland's population is just 5.3 million. So pretty much every Finnish household has a sauna.
Saunas are toasty warm.
Finns traditionally take a sauna - which is heated to between 80-110°C - in the evening, after washing.