TRE; trauma release exercise.
Curious if anyone has experience with TRE. This site describes several at-home exercises: https://www.choosingtherapy.com/trauma-release-exercises/
TRE has been successfully used to address depression, anxiety, PTSD, and CPTSD. The principle behind the application appears to be derived from a statement by Dr. Peter Levine who noted that
"trembling (shuddering, shivering, shaking) can be associated with protection and recovery from PTSD as if the rapid movement of the body resets the overactive sympathetic nervous system."
In short, tension and stress get stored within the body in response to trauma. Trembling is one mechanism the body uses to cope with the excess nervous system stimulation. Intentionally triggering the shaking/trembling can facilitate the release of trauma from 'muscle memory'. The challenge, I think, arises if you're a control freak uncomfortable with your body doing things on its own.
I'm finding this to really improve quality of sleep after decades of insomnia. Highly recommend trying it if you suffer from gnarly anxiety/depression/PTSD/etc.