If you scroll through Facebook you've probably seen a video just like this. People jump into freezing water as part of the challenge, then they nominate their friends to do the same. You have 24 hours to make the plunge . You're encouraged to donate one hundred dollars to a charity of your choice and while it's all in good fun, first responders say it's not very funny. Emt's hope people don't dive in, but if they do, there are a few things to keep in mind. Experts say taking this quick dip can send someone into shock or even cause hypothermia if they have pre-existing conditions, so think twice before you make the plunge.
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