Attend to your neck tube
Imagine that some part of your neck can be represented by a tube. You may choose your windpipe, or your oesophagus or your spinal cord. Picture it as a piece of flexible tubing, like an exercise cord. Imagine holding a piece of tubing at the top, and let it drape downwards. Relax and lengthen your real neck and, of course, drop your shoulders, too.
Now picture the tube stretching forward. This represents the "head forward" posture, and thus putting a kink or bend in your imaginary tube. This represents the posture when we tilt our chin upwards to lift our head.. No you don't. Try not to shorten the back of your neck.
This week's habit, lengthen your own neck (tube). It is a handy cue to better posture, therefore less neck pain. So it keeps you looking younger, slimmer and and smarter.