Let me rephrase my question a little bit - Is it true that micro circulations in most parts of the brain (& other organ tissues) work in minimal volumes when we don’t move (at resting heart rate) and in almost zero volumes when we exercise (at a higher heart rate)?

Most people assume that once our pre-capillary sphincters/pericytes (or the likes) are opened, blood can flow through capillaries automatically and smoothly. This cannot be true for all internal organs (including the brain, bones, and skin) because if this is true, people will never fall sick easily from having minor problems from hay fever to headaches, or serious chronic diseases, or even cancers. While I was working on my thesis “Taichi Healing & Pao’s Law of Exercise” (which is an old method to pump more blood to brain and other organs by (1) cheating our brains to open up all capillaries in internal organs, and then (2) elevating our heart rates moderately to increase microcirculation flow to these capillaries), I found that only the traditional taichi forms (much slower than the modern taichi forms which were developed after 1955) are slow enough to do the trick on our brains and improve health in weeks if we spend 30 minutes a day doing them. This discovery also led to the question that blood cannot really flow through capillaries in organs at resting heart rate. I tend to believe that there is only a small amount of blood, just enough to keep our organ cells barely alive. Then, when we start exercising (or move faster than our brain threshold like doing normal aerobics, jogging, or endurance type of walking), most of our blood will be diverted to skeletal muscles and very little blood (or no blood) will be sent to organ cells again. Therefore, whether we move or not, our internal organs do not get very much blood supply. I call it a microcirculation dilemma problem which only happens to internal organs. It does not happen to skeletal muscle tissues because they get all the blood that they want when we move or exercise. The dilemma problem became more obvious when I looked deeper into the bone mass problem suffered by astronauts in space with zero gravity. I bet that their brains would also shrink in size if they stay up there for too long, but this is a separate story. Can some experts in this field confirm this dilemma theory? You can imagine that if we have this chronic situation for decades, there will be a lot of mutated cells in our organs causing all kinds of havoc.

Note 1: Of course, there are exceptions to this dilemma problem. One of which concerns kids. It is quite obvious that the skin and bone cells for kids up to adolescent stage are exempted from this dilemma problem before they enter into adulthoods (i.e. when they stop growing in height).

Note 2: As described in Pao’s Law of Exercises, there are two ways of sending enough blood to brain cells and other organ cells by exercise. Both methods require a moderately high heart rate and no movement (or extremely slow movements) during or after the exercise. The most efficient method is to do something very slow, like the traditional taichi or yoga stretching. The 2nd method is to do 30 sets of faster moving taichi or yoga, or any kind of sports or exercise, with rests of stillness in between sets (see below attachment). Of course, there are other ways which employ external or food stimulants to elevate heart rates.

Article The 30-Time Start-Stop Interval Training For Internal Organs...