By contrast, people who are defensive or angry may protectively fold their arms across their chest, clench their hands into a fist or tightly grip their arm or wrist.

FORBES: Body Language Savvy for Sales

So, you can try using bar handles to neutralize the wrist with a light grip, or try making a light fist and stabilizing the neutral wrist on a soft exercise mat.

CNN: What kind of strength work won't aggravate rotator cuff issue?