Being Well-grounded
The extremities of the feet, hands and head (face and brain) are the leading indicators of the general health and functioning of the body — so much so that that is how we recognize individuals apart from every other. Those are also the most visible and obvious parts of every body — more than we could identify one’s person’s heart from another, shoulder or hip, etc.
They are also the distinctively expressive organs of the human body. When we note that an individual is remarkably animated (vibrant, lively) it is because of those movements at the face, hands and feet — rather than how high or far they jump, fast they run, or how much they lift. And in fact, specialists in such activities will adopt a rather stoic expression throughout to conserve their energy only to the essential required for efficiency and economy of their "movement."
Apart from such narrow and constrained competitions though, the human is at its best being ready and able to express whatever movements might be required by their versatility afforded by their face (communication), hands (tool using and making), and feet (leveraging one’s bodyweight against the ground). Other animals are much more specialized in what they can do — and why they do it so well. But the human being (organism) has the capacity to do many things — because of the large brain capacity that enables and empowers it. Humans seem to be good at whatever they decide they want to become good at.
One of the earliest forms of human expression and distinction in addition to physical competition, was simply dance — that exhibited fine motor coordination in addition to the gross motor coordination of traditional athletics. Other similar manifestations were painting (art) and music (dexterity) — in the broader category of culture — those shared values it was agreed upon that were desirable qualities to cultivate and improve — for long-forgotten reasons.
Often, people didn’t know why, but recognized that there was something “right” in being light on one’s feet — rather than simply plodding along, shuffling one’s feet — even for great distances. Palpably and aesthetically, it was not the same sense as one leaping and moving quickly on their feet — and particularly on their toes or balls of their feet. Such movements, required the greater articulation of the foot musculature — which has led some exercise physiologists to proclaim that the feet are the second heart of the human body when operated in this manner — as the "soleus pushup.”
That has led to a few enterprising individuals to devise and market a simple device to simulate this movement — but doesn’t require it. It can easily and effectively be done sitting in any chair that allows such freedom of movement — and as such, may even be superior to a stationary bicycle because of its singular focus on the importance of the full range foot movement — not to be confused with the movement at the hips and knees. It is the alternation of the muscle state from fullest contraction to relaxation that produces the pumping effect — which is also the quality produced by any and all the muscles activated in this way.
That is the very reason that exercise in general is beneficial for the health of the body — by directing the blood flow to those areas actually exercised in this manner. If it were only the heart responsible for pumping blood equally to all parts of the body, then we would not see the disproportionate developments of those who choose only to work their upper body, and ignore their lower body -- and vice-versa. But the flow must go to where there actually is the clearing of space because of the muscular contractions compressing the fluids out of that area — which then makes it possible and easy for the heart to pump blood into those vacuums. Without such preceding contractions and clearing, the heart cannot overcome the resistance of the already full area — and fluid accumulation and inflammation (swelling) Is the inevitable result — that continues to worsen in time without this intervention.
This is the condition seen so often with poor circulation in their feet and legs — even if they articulate movement at the hip and knees — because the backup begins at the feet that is minimally or inadequately articulated — even while there may be movement at the hips and knees. This is fairly typical of the movements performed on exercise machines that do not stress the importance of the movement at the extremity. For all practical purposes, it is the same as walking a mile while shuffling their feet. There is no articulation at the foot, and thus no pumping effect — which is the chief value of the exercise.
So when one realizes that it is the movement at the feet (ankle), the machine, device, resistance is much less important — that movement can be done, seated, lying, or standing — with or without equipment, productively. That is true for all the extremities of the body — which are those areas notorious for the poorest circulation of the body — but doesn’t have to be that way. The understanding changes the equation. Then when one realizes that the distal (insertion) of muscles contracts towards the proximal (origin), it becomes a simple matter in accomplishing the healthful effect of exercises — rather than just burning as many calories futilely by doing all the wrong things and wondering why exercise does not deliver the results promised by so many “experts.”
It doesn’t matter how much of the wrong thing you do — and have no time to learn the right thing that works.