I suspect our temperature regulation goes out of the window too as our bodies are used to be mainly in the air (not conducting, nor conserving, nor dense) and built a range of mechanisms to cool itself or maintain the livable temp to the main organs first. Sauna is a great example in how we survive hot air at temps nearing a boiling point of water by oversweating, while water makes this ineffective and a spilled coffee can cause severe burns. If there's a chance for the bathbeds, the reaction of the body to the temp should be considered too.