As much as I am open to experimentation I would never try this without first getting my spine flexible and mobile. Mine actually is extremely healthy, very mobile and if I may say "educated", as I have learned to segment each vertebrate when I move it. What I mean is, I can move my spine one vertebrae at a time with almost full control. Multifidus muscles in my back are quite very healthy and strong. Yet, I would still not do this exercise since I believe is so threatening to the body, that the body will lock itself elsewhere, at a level that is too deep to understand or prevent. The chance I believe, of a serious injury with this hack, out weight any possible advantages.
Yes I agree, at no time did I ever allow it to take my full body weight. This was a prototype.
It is possible to slowly decrease the amount the legs are bearing weight until a point of positive traction is applied that feels ok, but I agree I never got it or myself to the stage I was aiming for.
I really miss having this set up, for some reason it put me into a very deep state, great for having fresh insights.
I could hear my heart/pulse increase as I inhaled and decrease as I exhaled.
This gives direct insight into what the sympathetic/parasympathetic nervous system are doing. Heart rate variability as a deep experience.
This rig was pretty crap, one day we can do a better one and you can perhaps help me to prepare for it.
It might actually be interesting to do this suspended in water?
I really like the idea of allowing the body to swing back underneath the head where it belongs.
As we age, our heads tend to move forward, this together with other advanced mobility/awareness guidance could potentially help to "train" us back.
It would need to be variable tension/suspension to provide the optimal signal.