Ever have trouble getting your vocals as good in the studio as you do in live performance? How you stand at the mic in the studio makes all the difference in the world.
If your hands hang limply at your sides, your face frozen in a zombie stare, your voice doesn't know what to do. If you were speaking or singing to the one to whom the lyrics of the song is directed, you would probably use a much different body language- the LANGUAGE OF COMMUNICATION! You would probably make facial expressions, use your hands, even your legs and spine would move with the groove. Technically, this tells your voice what to do in three areas: breath (your arms are connected to your spine, your spine works your ribcage), tone (moving your face and eyes make differences in your vocal resonators), and real-ness of your vocal performance. Heck, it gets YOU into your own song.
Think about it this way: Someone listens to your recorded voice on their cd player. You should affect them like a great actor who pulls you into their performance. At the mic, use body language like you naturally would if you were talking or singing the song in live performance. It's a great way to make your cd listener feel something.
In my experience ...Move it... or lose em!