I'm used to taking cold showers.

[Luis Fleming]

I'm used to taking cold showers.
According to the link, whenever I use the term "be used to" it refers to an actions that was difficult to do in the past, but now not. Did I get it right?
Thus, is it strange to say "I'm used to drinking water"?

 

[jutfrank]

It has nothing to do with difficulty, only familiarity.

But yes, you're right that I'm used to drinking water is a bit strange because it means that the speaker was unfamiliar with drinking water in the past, and this is quite hard to imagine.

 

[5jj]

According to the link, whenever I use the term "be used to" it refers to an actions that was difficult to do in the past, but now not.

The actions were not necessarily difficult; they were just not familiar or customary.