These are the physio-style exercises Mead recommends you do outside of your workouts to help improve your wrist mobility and strength…

Wrist circles: circle your wrists regularly to help improve flexibility and blood flow
Prayer stretch: lace your palms together in a prayer position, then move your hands down your body as your elbows come up
Reverse prayer stretch: place the backs of your hands together in front of you, fingers pointing down, and then drop your elbows
Forearm twist stretch: sit comfortably in a chair with your arms straight out in front of you and your hands back to back. Bring your right hand over your left one, and interlace your fingers. Keeping your hands locked together, bring them down and under, towards you and then up through the space between your arms. Feel the stretch to your forearms and hold on – only go as far as you can! Hold for 30 seconds. Repeat several times on each arm.

Wrist pain during strength training: how to protect your wrists