The phrase "cold showers" means to experience something uncomfortable, unpleasant, or challenging. It refers to facing difficult situations or receiving unwelcome news unexpectedly.
Taking cold showers instead of hot showers provides surprising health benefits — from burning fat to depression relief — for our skin and body. (medicaldaily.com)
The benefits of cold showers really do go on and on. (chestsculpting.com)
I don't remember posting about cold showers in a while. (joshuaspodek.com)