I've heart my knees playing basketball, lacrosse, and soccer. But I've never hurt my knees skiing.
I see you're not superstitious. Naming calls, you know.
I used to say exactly the same thing w.r.t knees. Dunno about heart, but I had hurt my knees skydiving, swimming, rock climbing and gravel skating. Only one of which is nominally
And then 2006 introduced me to its little friend the tree well. All it takes is one slide, one yoink and one upside down hang from a binding heel and that knee will never be right again.
Yet people that know I've had knee issues in he past do tend to say something like "Skiing?!? Isn't that hard on your knees?" when I talk about going skiing.
They're not talking about you. They're mapping your intent on what they would feel or experience.