Here’s a 2023 paper on the subject, but let’s first see what it is, from Michigan State University:
https://hal.bim.msu.edu/CMEonLine/Autonomic/Sympathetic/Treatment/SuboccipitalRelease/start.html
and University of Wisconsin:
https://www.fammed.wisc.edu/suboccipital-release-technique/
An instruction paper for osteopaths:
“This technique treats migraines, headaches, and neck pain. It can also be used as an adjunct for treating conditions with autonomic dysfunction.
Before performing a suboccipital release, the patient should have a neurologic and musculoskeletal exam of the neck and upper extremities. Ensure that the patient does not have contraindications such as: Acute cervical fractures; concern for neurovascular compromise; focal neurologic deficit.”
https://www.ncbi.nlm.nih.gov/books/NBK582126/ “Osteopathic Manipulative Treatment: Suboccipital Release”
I read a half-dozen other 2023 papers comparing this technique with other suboccipital techniques. I’m not posting links because these papers didn’t completely specify their technique, what was its history, and what was its safety. It’s extremely easy to traumatize this area of our bodies.
I similarly won’t post links to other 2023 papers that claimed this technique improved other body problems, such as ankle range of motion, hamstring tightness, and lumbar pain. Mechanistic explanations are required, not just “they are connected by one neural system,” hand-waving, and woo.
This search for recent research was disappointing. I’ve performed suboccipital release on myself at least twice a day for years the same way I saw physical therapists do it to their patients while I was in physical therapy 13 years ago. Maybe there’s a video about self-suboccipital release that didn’t involve gadgets, but I couldn’t find it.
The point of this technique is to evoke a relaxation response. It usually relaxes areas from the neck to my feet. Sometimes it works quickly, other times it takes a while.
In any event – you and I are different, and I’m definitely not recommending suboccipital release for you. It isn’t a cure-all for neck pain, sitting most of the day, bad posture, poor ergonomic setup, being stuck in traffic, being glued to your phone, etc.