With stress & anxiety, gentle stretches and breathing exercises can often help provide relief. This video shows stretches for the neck & chest area as well as diaphragmatic breathing which may help.
Start off with stretching the neck area. Upper trap, levator scap, and sternocleidomastoid (SCM) stretches are a great way to help relieve stress and tension.
Isometric exercises are also great to relieve stress and tension by activating the muscles but not making big movements that might be painful. Cervical side bending and rotation are great ways to help relax the neck muscles.
Finally, diaphragmatic or belly breathing can help the whole body relax and reduce stress.
Related Videos: