Taylor -- who just gave birth eight months ago
to her daughter Junie, who also stars in the music video -- insists that all she does to keep in shape is exactly what fans saw in the music video: she dances. "You’re going to gag right now because I would really be lying to you if I told you that I worked out," she admits to Vogue
. "I keep it really real, I don’t like to lie and say I work out, three, four times a week. All I do is dance. All I do is dance."