Dubbing is Following the Follower

The Game of Dubbing requires a warm-up of two-team mirror, follow the follower and mirror speech. This has all those earlier exercises in it, all rolled into one great, fun game.
It’s easy to fall into traps.
Watch to make sure the voice is not leading the body and vice-versa. Careful observation of the players doing the bodies sparks dialogue

Because it is tricky, many people do dubbing by taking turns in Gibberish as “Foreign Movie” dubbing. That is a different game and without a real interpretation, this becomes heady and the voices just make stuff up using the bodies as puppets.