Lie on your back with your knees bent and your feet flat on the floor.
Place a pillow or towel under your head and look up towards the ceiling.
Visualise a pivot point going through your ears.
Gently nod your chin as though rotating around that pivot point without tensing your side neck muscles.
Use the muscles, deep at the front of your throat instead.
This is a very subtle exercise and will take practice to tuck your chin in just enough so you feel the back of your head a little heavy on the pillow but without the activity of your side neck muscles.
These deep neck muscles are important to retrain to help headaches and neck issues from office or computer work.
Hold your chin downwards as advised and continue to breath in a controlled manner by expanding and contracting your lower ribcage.
Contract your lower stomach and pelvic floor muscles at the same time throughout the movement.