Drinking cold beverages/water is not good for the body system and digestion in particular.
Some doctors have reported that doing so can cause heart attacks as well as cancer.
I have not been able to emphatically, independently corroborate this one way or the other.

Whatever the case may be, ingesting an occasional cold beverage is a refreshing treat which isn’t gonna cause any great harm.
However the regular/daily consumption of cold beverages is a bad idea!
For myself, I rarely drink cold beverages.
I stopped regularly doing that about 2 years ago.

Drinking warm or hot beverages (tea, water, etc.) is best! Heat helps promote digestive activity. Cold temperatures by it’s nature, causes constriction and slowing.
A good modest room temperature beverage is cool to!
I’m not a believer in coffer so I purposefully left that 1 out. But if you must…go with decaf!

For those who like to drink cold water, this article is applicable to you. It is nice to have a cup of cold drink after a meal. However, the cold water will solidify the oily stuff that you have just consumed. It will slow down the digestion.

Once this “sludge” reacts with the acid, it will break down and be absorbed by the intestine faster than the solid food. It will line the intestine.

Very soon, this will turn into fats and lead to cancer. It is best to drink hot soup or warm water after a meal.