Flushing cold water through a tube down the throat can stop the body overheating, helping prevent brain damage after a heart attack
Source:
https://www.newscientist.com/article/2228830-pumping-cold-water-inside-the-body-could-help-after-heart-attacks/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home