I've had neck pain for the past few years. After visiting a number of doctors and physiotherapists and having an MRI to help diagnose - I was recommended strong anti-inflammatory medicine and massages. While it helped, this was a persistent problem. Ultimately it wasn't until I started building a routine of stretching and building strength that I've started to overcome it. I have a feeling it might be a similar circumstance to our discovery of Myopia prevention; we had evidence to suggest sunlight helped, but not a true understanding of the mechanics until recently. Stretching might not be the solution by itself, but maintaining and improving mobility is a stepping stone to healthy muscles.