does ai need a “body”?

This is one of the questions that was asked in a podcast I was listening to. I never thought of it that way – does AI really need a body or can AI exist like it did in the movie “Her”? What I am curious to know is, how much more development and growth does an AI experience with a body? Do sensory inputs from light brightness, smells, running into things, art, etc. increase the level of cognitions for an AI with a “body” versus without a “body”?