I worked in a kitchen at a cult on a compound in Texas for a year and that summer was a hot one. One those 100F+ days I’d head into the kitchen on my off hours and hang out in the deep freeze walk in. This was 20 years ago, but if memory serves it was set to something like -10F, and god was it wonderful to cool down in. I’d stay in for 5 or 10 minutes and come out ready to go again. I loved it.