With your finger interlaced, bend your affected wrist backwards and give a nice stretch. Hold on to the stretch for 20 seconds and release. Repeat on the other side. If you are someone recovering from a stroke or brain injury, you may find this exercise challenging. It is better to ask a specialised therapist for advice before performing. https://thebigblogs.com/blogs/how-hand-therapy-can-restore-strength-and-mobility/