Questions tagged [breathing]

It is a process of gaseous exchange by means of respiratory system. It includes inhalation-exhalation and exchange of gases at the level of alveoli-capillaries in lungs.

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Is the chest supposed to be still during deep breathing? [closed]

I hope this is still under the theme of medical sciences questions. There are some instructions on the internet telling me that when deep breathing, our chest must be still. But I notice that when I ...
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Why sometime it's safer to deliver oxygen through tracheostomy than through the mouth?

There are 3 reasons for tracheostomy: to clear throat, if upper part is blocked and to deliver oxygen more safely. It's not clear about the 3rd reason, why it's safer?
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Is city air pollution causes allergy?

Is there any evidence (study) which shows correlation with city air to allergy (to anything) or any other breath health problems? If yes is this correlation different if someone lives in big city ...
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Can oxygen shortage in breaths affect the person's voice properties?

It is both funny and strange, that after hearing this on a movie(which I assumed then, it's been added to make movie sound deeply scientific), about oxygen shortage in successive breaths affect person'...
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Are hand-made mask using HEPA safe to breath through?

As we know, there are no N95, N99 nor N100 masks anymore. In this YouTube video A Doctor Explains How to Make the Safest Face Mask, a doctor, and then his wife, talk about 'the safest face mask' hand-...
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How is nitrogen not exchanged in respiration? [closed]

Air is 78% of nitrogen. When we inhale air, we inhale large amounts of nitrogen when compared to oxygen. How is nitrogen not exchanged? How is it exhaled?
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Simulate hypoxic training by breath holding/regulation

Is it possible to physically simulate hypoxic training by doing periodic breath holds or breath regulation during aerobic activity? Ideally, it ought to be done in a hypobaric/hypoxic chamber whilst ...
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How would a newborn infant reflexively breathing react to rescue breaths administered correctly after birth?

In the specific fictional case, one that takes place in my novel, a baby is born medically unassisted at home, with only the mother and father present (so no midwife, doula, no EMS, etc.) The baby ...
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44 views

Inspiratory and Expiratory Muscle Training

I'm interested in the scientific evidence of inspiratory and expiratory muscle training. There are various breathing training devices: According to their description, they enhance "strength and ...
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What is the lower end of C02 exposure, where negative health effects of not enough C02 start? [closed]

I am trying to optimize my indoor CO2 levels. I bought a monitor, which seems to be fairly accurate: When I air my flat thoroughly, for 30min with fans running, I am able to achieve about 450 ppm ...
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132 views

Why does one breaths out heavily in cold days but breathe in very easily?

What could be the reason that someone during cycling on colder days (under 15°C or 60°F) needs to invest effort in breathing out as to push the air against something. On the other hand breathing in is ...
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Is it possible for someone to develop Aspiration Pneumonia from standing in very heavy rain?

For example, could the spray (liquid moisture) suspended in the air cause irritation and inflammation of the lungs similar to what is observed in secondary drowning, where inhaled water irritates the ...
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Common to panic/have trouble breathing when an oxygen mask is placed over nose and mouth prior to surgery with anesthesia?

I had my 17th surgery yesterday so it's fair to say I've been around the "hospital" block quite a few times and know what to expect on the patient side of things. Everything went as expected up ...
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Are babies turned upside down after birth?

I haven't attended a birth yet, and I heard or saw on some TV show that babies are turn upside down by the doctor and / or slapped in the butt to force them to cry, with the intention of make them ...
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When trapped in an air pocket does breathing slowly prolong the amount of time you have? [closed]

So there is roughly 21% oxygen in the air. When taking a "normal" breath you saturate your blood with oxygen and exhale air with roughly 16% oxygen. With that in mind, I am curious if changing your ...
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What are clinically advised methods to improve nocturnal respiration other than CPAP?

Based on conventional medicine, what advice should a physician give a patient who experiences breathing difficulty during sleep that is not determined to require a CPAP machine and for which the root ...
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How can breathing techniques lessen anxiety?

In addition to other treatment options, breathing techniques are commonly recommended for management of anxiety and panic. I am able to find good information on techniques, but I have difficulty ...
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Need to exhale while holding breath

Recently I tried holding my breath for as long as I could. I managed to hold it for almost 2 minutes, but after a bit more than 1 minute, I already felt a strong need to exhale some of the air. At the ...
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237 views

When should one stop CPR?

I'm looking on various websites. They all say to stop CPR when normal breathing has started. But this news says that that is wrong and you CPR must not be stopped unless you have breathing and a pulse:...
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Could the cerebral hypoxia caused by voluntarily hyperventilating for an hour (“breathwork”) cause brain damage?

TL;DR hyperventilating for 60 minutes for psychedelic/meditative/therapeutic effect: is this dangerous? Hyperventilation can lead to cerebral hypoxia, as hypocapnia (reduced CO2 in blood) causes ...
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Does Clinical death experience and sleep paralysis experience the same? did anyone die due to sleep paralysis?

Does Clinical death experience and sleep paralysis experience are the same? did anyone die due to sleep paralysis?
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Is a hyperventilation+hypoventilation breathing exercise (Wim Hof Method) more likely to prevent or promote cancer?

Apart from exposure to cold, the core element of the Wim Hof Method is a breathing technique, which alternates between hyperventilation and hypoventilation (apparently similar to Tummo meditation). It ...
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796 views

How much water weight is it normal to lose while sleeping?

When you sleep, you sweat out and breathe out some water, but how much is normal to lose, assuming you're not actively trying to make yourself sweat?
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What triggers yawning for some people during physical activity

When exercising, oxygen demand increases. Heart rate increases, breathing rate increases, and depth of breaths increases. Some people experience yawning during exercise. What reasons would that ...
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Can ear wax cause nasal congestion?

I read that blocked middle ear/Eustachian tubes can cause nasal congestion as they are connected up to the back of the ear drum, yet flushing these out with salt mixed with water has no effect. So ...
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Have to constantly pick my nose in order to breathe normally

My nose gets clogged very frequently. I keep have to dig out boogers out of it. They stick to the inner and upper part of the nostrils. Sometimes it's small pieces. Sometimes it's one huge piece. ...
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Why consciousness is lost immediately when heart stops beating?

When heart stops beating - consciousness is lost in seconds. It is explained that it is due to the drop of blood pressure in brain veins. However, by my understanding - that should only make brain ...
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Condition of mucus coated trachea, but clear lungs?

Is there a medical condition or illness (what's the terminology??) for when there is an acute incidence of when the trachea is coated with so much mucus and phlegm that it causes labored breathing and ...
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311 views

Is it possible for the lungs and heart to work independently of one another?

I understand that the lungs take in oxygen, pass it to the heart to send throughout the body, and receive CO2 from cellular respiration that the lungs then breathe out. (Oversimplified, I know, but ...
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Are there any negative health effects associated with breathing in air surrounding sulphur hot springs?

Are there any negative health effects associated with breathing in air surrounding sulphur hot springs? I would be interested in what sort of gaseous compounds might be found in such air, which might ...
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Term for noisy non-vocal/non-“wheezy” breathing on inhalation

What is the medical term for abnormally noisy inhalation that contains no tonal noise, but rather is airy and "wet" (but no crackling or popping), originating in the upper respiratory tract -- similar ...
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292 views

Suicide with no pain [closed]

How to suicide with no pain?My rights are to live but I never asked to come to this world and to face all this.I am not happy and I can't feel happy the only I really want is to die not think not pain,...
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Performing Valsalva maneuver with partly open airway?

The Valsalva maneuver is defined as "attempted exhalation against a closed airway" or "The effort to breathe out forcibly while the mouth and nose are firmly closed or the vocal cords pressed together"...
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Does an infected dental nerve affect nose breahting?

I went to my dentist for a lookup and he told me I needed a tooth canal treatment. He asked me if I had some problems with my nose, like if it's closed or dry. He was right about it and he told me the ...
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Scientific Basis for Apple Watch Activity Rings

I have just started using an apple watch, and am finding that it's "activity rings" feature encourages me to: perform more than 30 minutes of exercise a day (green 'exercise' ring); move around ...
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Does nose-breathing filter out pollutants?

I live in a somewhat smoggy/polluted city, where the air pollution level regularly varies from totally clean to fairly dirty (3 mile visibility). When I'm exercising (cycling) and the air is on the ...
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Permanent stuffy nose…?

I've been to four ENT's and most just prescribe me medication and spend 5 minutes talking to me and leave. I've tried nasal sprays, pills, patches and no luck. My latest ENT doctor told me I had a ...
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667 views

Why does breathing stop during cardiac arrest?

I've been reading about resuscitation, and found several suggestions that people don't continue breathing after effective heart function stops because the diaphragm quickly runs out of oxygen. Is ...
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How to breath better when you live in a big city?

We know that big cities have bad effects on health, due to their poor quality of air. The main pollutants we find in the air are PM10, nitrogen dioxyde and ozone. These three pollutants hazardous to ...
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Maximizing breathing: one long breath or two short breaths?

As a general rule for physical exertion, continuous, rhythmic, and controlled breathing is essential. This includes short "sprint" type bursts of activity as well as long "endurance&...
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What happens when a person gets the wind knocked out of them?

I asked a question on Martial Arts.SE about why many boxers combine each punch they throw with a rapid exhalation (making a pronounced, sharp huffing or hissing sound). Some of the answers say that ...
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Why is predicted FVC calculated on height only (and not weight)?

(please forgive me if this is a stupid question, as I have very little medical knowledge) I've been found to have an unusally low vital capacity (about 65% of the predicted value) so I'm up for a ...
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640 views

Carbon Dioxide Poisoning in Everyday Situations

I am wondering whether slight CO2 poisoning (hypercapnia) can be induced by everyday bad behaviour. I am particularly interested in the consequences of The prolonged use of a surgical mask (a.k.a. ...
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What are the dangers of breathing minerals that are dispersed into the air by a humidifier?

The Mayo Clinic warns against the use of tap water in a humidifier: Use distilled or demineralized water. Tap water contains minerals that can create deposits inside your humidifier that promote ...
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Will running next to a highway cause me to inhale more particulates?

I'm wondering if running next to a highway will cause humans to inhale more particulate matter and harmful substances.
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Is breathing using the nose and diaphragm truly healthier?

Searching for instructions on how to breathe properly one generally comes across the following: Breathe using the nose. Breathe using the diaphragm. Yet I have never seen these claims with reliable ...
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Covering head while sleeping?

I cover my head with covers while sleeping. I find difficult to sleep without doing it, I feel like there is not enought dark (thought all lighs are turned off and it's really dark) and I simply ...
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What is the ideal oxygen air percentage for longterm health?

I'm working on a science-fiction story, and a recent scene deals with someone tampering with the O2 levels of a ship's recycled atmosphere. I find myself wondering, what is the ideal oxygen level for ...
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Severe asthma and autoimmune skin reactions with no relief [closed]

I have lived almost my entire life in Ross County, Ohio, which is quite polluted. I remember smelling the paper mill when I was young, I don't even smell it anymore, but people comment about it when ...
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Quicker increase in breathing rate due to stretching/engaging tired muscles [closed]

After exercise or after eating too much food (or both) I usually become tired. I regularly observe that if I strech or engage major muscles (chest or legs) my breathing rate quickens considerably in ...