How many expressions can you think of that name the same body parts twice - separated only by a preposition or conjunction - as in TOE TO TOE. There are at least ten others.

Possible answers:

HAND IN HAND
FACE TO FACE
EYE TO EYE
NECK AND NECK
BACK TO BACK
ARM IN ARM
HEAD TO HEAD
HAND TO HAND 
CHEEK TO CHEEK
HEART TO HEART