Z-Health and Flexibility

I've always understood mobility as joint ROM and flexibility as soft tissue (muscle) elasticity. The conundrum I ran into pre-Z was performing flexibiltiy exercises trying to increase ROM about the joint. This worked slightly in the very, very long run, but nowhere near as well as the immediate increases brought about by Z--direct, precise, thorough joint mobility work.

Above are two videos, filmed 5 months apart: The first was pre-Z and I weighed about 10lbs more than I did in the second. In the first, I warmed up with 65lbs, 85lbs, 95lbs, 115lbs before attempting the 135lbs. In the second, I had no warm-ups, just two missed attempts at 135lbs before making the third.

My reasons for posting these videos are threefold:

1. To demonstrate the improvement in motor control from concentrated daily mobility work
2. To demonstrate the increased flexibility from concentrated daily mobilty work
3. To demonstrate the increased strength, total systemic strength v. localized special strength, like a focused squat cycle.

However, I really want to focus on the flexbility aspect here.

How much flexibility work does someone practicing Z-Health have to perform?

The answers are "some" and "none."

1. "Some:" a) An athlete that requires specific flexbility for an event, like a gymnast who has to perform the splits, should perform Z for the joints in which the muscles responsible for the particular task insert, i.e.: hips, hams, and calves, followed by skill work in that position; b) an individual battling to prevent the formation of post-surgical individual scar tissue or an individual attempting the breakdown of post-surgically induced scar tissue
2. "None:" Neither my clients or I perform any flexibility work anymore. The Z takes care of the soft tissue work by increasing joint ROM and control.

Obviously, this opens a whole can of worms.

What value is there in flexibilty training for the general population? Would it be reckless to say none? Do we truly understand the differences in flexibility training and mobility training? Do we truly understand that many fitness professionals believe that they are the same thing and that the intent in both concepts may be the same, but the outcomes are radically and starkly different?

For me personally and professionally, I no longer see the value in any flexibility protocols if I haven't attempted any mobility work first. I may include some flexibility work after or in tandem with Z, but this is a rare case indeed.