I've been ruthlessly trimming body language from my WIP. This, along with excising the word 'that,' are two good ways to trim a too-high word count.
With the best of intentions, I wrote gestures and mannerisms. My characters grinned, shrugged, grimaced, nodded, and sighed. They eyed or raised their eyebrows, or both. They shook their heads, clenched their fists, balled their fists. Their hearts palpitated before sinking into the pits of their stomachs, a physical impossibility unless they'd just been gored by a berserk rhinoceros.
I realized my body language descriptions often echoed the dialogue: She shook her head. "No."
I'm now adding a few back in. Dialogue usually takes precedence over body language, but a well described gesture can serve a valuable function.
It can serve as a pause for introducing a new train of thought.
It can heighten tension by describing viscerally how love / pain / indecision / fear / agony / waiting / suspecting feels.
It adds drama when one character reads the body language of another and seeing a lie. Or the truth.
Gestures. I'm learning to use them wisely.