Humans can be satisfied with 2 hours of sleep

Currently we require about 7.5 hours per day for sleep.average person has only about 20-25 s of oxygen
This time, among adults, varies from 6 to 9 hours. Withthese days, almost twice less than a century ago. This
advance of chronic diseases (asthma, cancer,explains longer sleep for a modern man.)
diabetes, cardiovascular problems, COPD, etc.), peopleHowever, hundreds of Russians continued to progress
generally sleep longer. Practical experience and clinicalfurther and their GPs were monitoring their health.
studies showed that voluntary sleep restrictions (e.g.,When these patients increased their body oxygenation
only 3-5 hours) are impossible to maintain. Sleepup to 2.5-3 minutes (here again we are talking about
deprivation experiments, conducted on animals,stress-free breath holding test after usual exhalation), it
demonstrated loss of appetite, loss of weight, andwas found that their sleep gets reduced, again without
gradual death.trying (!), down to 2 hours only. Doctor Buteyko and
Currently we require about 7.5 hours per day for sleep.many his medical colleagues were among those who
This time, among adults, varies from 6 to 9 hours. Withpractically experienced this effect.
advance of chronic diseases (asthma, cancer,Remarkably, the same observation (about 2 hours of
diabetes, cardiovascular problems, COPD, etc.), peoplesleep in perfect health) can be found in old books
generally sleep longer. Practical experience and clinicalabout another breathing retraining technique “hatha
studies showed that voluntary sleep restrictions (e.g.,yoga” (“hatha yoga” means “master of
only 3-5 hours) are impossible to maintain. Sleepbreath”). In fact, hatha yoga master were supposed
deprivation experiments, conducted on animals,to have about 3-5 minutes of oxygen in the body with
demonstrated loss of appetite and gradual death.2 hours of natural sleep.
Meanwhile, clinical observations of 200 Russian medicalFor both systems, hatha yoga and the Buteyko
doctors, who practice the Buteyko self-oxygenationmethod, the goal is to reduce/restrain breathing using
therapy, revealed that humans can naturally sleep forspecial breathing exercises and natural means.
2 hours only, if they achieve superior bodyPhysiologically, this goal makes perfect sense since
oxygenation. How and why?thousands of medical studies proved that the more
Virtually all chronic conditions have tissue hypoxia (lowwe breathe (at rest), the less oxygen our tissues get.
body oxygenation) as a normal feature. In cases ofHyperventilation, or deep breathing, or any
cancer, heart disease, and COPD poor cellularover-breathing, reduces body oxygenation. (Note that
oxygenation is the central factor that defineswe are talking about unconscious breathing patterns or
progression of the disease and the treatment methodsour breathing 24/7, not about some exercises that
used. At the same time, the unconscious breathingproduce short-term changes.)
pattern of people relates or even defines bodyHowever, in comparison with hatha yoga, the Buteyko
oxygenation.method is more specific and scientific. It was
In order to measure body oxygenation, after yourdeveloped by Doctor Buteyko during the 1960s when
usual exhalation, count your breath holding time inhe was the chief of the physiological laboratory and
seconds, but only until the first signs of discomfort orled the classified project funded by the Soviet Ministry
first desire to breathe. What is the link betweenof Aviation and Space Exploration. The project was
oxygenation and sleep?devoted to study of optimum air composition in
Severely sick and critically ill people usually have lessspaceships for maximum oxygenation of first Soviet
than 10 s of oxygen in the body. Most of theseastronauts. For almost a decade Dr. Buteyko studied
patients have long sleep (up to 10-12 hours) of veryinteractions between breathing patterns, exercises,
poor quality. The breathing pattern of these people istissue oxygenation, and the work of the human body.
often visible and audible. It is deep and heavy. MinuteHe realised that over- breathing reduces body
ventilation is about 3-5 times more than the medicaloxygenation and causes dozens of other physiological
norm.abnormalities.
When these sick people practice the ButeykoThere are several different mechanisms how
oxygenation therapy (learning how to breathe forbreathing and body oxygenation influence our sleep.
maximum body oxygenation), they achieve aboutThey involve oxygenation and relaxation of our brain
35-40 s of oxygen in the body and naturally spendand muscles, stability of the central nervous system
only about 6 hours for refreshing and quiet sleep. Most(over-breathing destabilizes the nerve cells), blood flow,
people are satisfied with this level of health since theywork of the immune system, activity of hormones,
do not experience symptoms of their diseases and doparasympathetic-sympathetic balance, and many other
not require medication at this stage. (Note that anprocesses.