That metaphors help us communicate new ideas by casting them in the terms of something similar yet familiar is well known. But did you know that your body not only tends to act out metaphors (e.g. leaning into the future) but also to impose them on the brain (shifting one's judgment about the personality of someone based on whether the perceiver's hands are cold or warm)? Well, it's true, and I was writing up a summary of the recent work when I came across an excellent article by Natalie Angier in The New York Times that does it better than I could. You can find it here: Abstract Thoughts? The Body Takes Them Literally
There's a mind/body debate in there that can wait for another day but in the meantime be conscious of the unconscious impact of metaphors.