Temperatures beyond 50°C are an acute risk. 75°C can cause lasting damages.
Yeah but you are talking about hot tubs and they are talking about hot tubes so maybe the rules are different like the tube is really hot but is a poor thermal conductor. Or they misspelled tub and they really like burning themselves… lots of options for interpretation here.
“Hot tube” seems like a slang for some kind of drug device. Like a weird bong or something
Ever been to sauna? Especially the Russian one? There’s no risk if you don’t have heart issues.
I’m regularly going to a Finnish sauna with >80°C, but air with 100% humidity is not the same as immersing yourself in scalding hot water.
Forget 75°, just 65°C (150°F) will give you third degree burns in 2 seconds:
Most adults will suffer third-degree burns if exposed to 150 degree water for two seconds. Burns will also occur with a six-second exposure to 140 degree water or with a thirty second exposure to 130 degree water. Even if the temperature is 120 degrees, a five minute exposure could result in third-degree burns.
(°F)
Sure but you can only do it once!
Seriously, even 75C water coming out of the tap would be dangerous and negligent.
I spilled a half cup of 175F water on my hand and got blisters. You absolutely cannot bathe in it.