What is the "second wind" that opens during a run? Is it scientifically proven to exist?

What is the "second wind" that opens during a run? Is it scientifically proven to exist?

Ep. 245: Dr. Stephen Cabral On Identifying And Fixing The Root Causes Of Your Health

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Answers (3)

Answer 1
November, 2020

it all depends on the physical fitness of the body. A trained person does not need a second wind. He is basic enough. For beginners, the second wind opens when the primary adaptation of the body muscles during stress occurs.

Answer 2
November, 2020

First) Over time, muscles are cleared from movement, and blood thinns from an increase in acidity due to an increase in the amount of carbonic acid caused by an increase in the proportion of carbon dioxide due to shallow breathing. We can call the second breath a state when, for the above reasons, the energy consumption in the body decreases.
Second) After 40 minutes, glucose ends and energy is taken from the breakdown of fats. We can also consider the appearance of this new source of energy as the second breath.
It is better to focus not on the second breath, but on endless endurance at the expense of a pure organism. People run rogaining, so it's possible. https://m.vk.com/wall161608263_88

Answer 3
November, 2020

The so-called "second wind" exists, but scientists have not yet come to a consensus regarding the nature of this phenomenon. There are several hypotheses:

  1. That the burst of energy after prolonged fatigue is associated with the production of endorphins. Endorphins are produced in response to prolonged stress to relieve pain and help a person cope with a heavy load.
  2. That during a long run, the body adapts to current conditions, and begins to use oxygen more efficiently. Well, that is, an insufficiently trained body quickly begins to experience an oxygen deficiency, lactic acid is produced, which acidifies the muscles - therefore, it is difficult for a person. And the second wind is the moment when the body does adapt to the load and begins to use oxygen more efficiently, and lactic acid stops accumulating in the muscles, and this is where relief comes.
  3. That a second wind appears when there is a change in metabolic activity. When the body, after prolonged fatigue and depletion of glycogen stores (the main source of energy), switches to a new fuel - fats, a person experiences a surge of strength.
  4. Psychological factor. Well, that is, attitude, will, dedication. The body reacts physically to your mental attitude.

There may be a combination of the above factors. But the fact that professionals practically do not have any second breath, and this condition is more characteristic of those who are not very well prepared, still makes the second point about the efficient use of oxygen and lactic acid more realistic.

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