Is "something you do" an authentication factor?

Is "Something you do" an authentication factor? Such as a behavior of inserting a smart card into the reader.

I thought it was two factors when using a smart card - "you have the card", "you know the PIN", but I encountered wrong number of factors to a question, and its official explanation claims "Something you do" is also a factor.

I can't post the original question due to copyright concerns(I got message for my previously posted questions and then I deleted them).

Thanks in advance!