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Questions tagged [physiology]

Human physiology is the science of the mechanical, physical, and biochemical functions of humans in good health, their organs, and the cells of which they are composed. The principal level of focus of physiology is at the level of organs and systems within systems.

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6
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249 views

Does clapping children on the back in certain positions help clear mucus from their lungs?

Chest Physical Therapy (CPT) is the practice of clapping children on the back to clear mucus out of the lungs. FairView (a Minnesotan non-profit health site) recommends it for chest infections. ...
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640 views

Are men more attracted to women who are ovulating over those who are not?

Background In 2016, a Business Insider article by Rebecca Harrington asserted that there have been multiple studies supporting the notion that men are preferentially attracted to women who are ...
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Does eating nonsalty food with MSG make you thirsty?

Assume that you're thirsty after eating food that didn't taste salty while you were eating it. I know that MSG contains sodium. Quora posts and https://msgdish.com/msg-problems-and-answers/ still ...
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Does handling your food release digestive juices and enzymes that enhances the meal?

In a Google Arts & Culture article, Yẹ́misí Aríbisálà, "Nigerian essayist, writer and food memoirist", states the following: There are scientific claims that fingers have powerful nerve ...
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Does nail-biting indicate iron deficiency?

I've seen on a lot of websites that nail-biting behaviour is due to lack of iron in the blood. I'm wondering if is this actually true, or just an urban myth which has spread and spread?
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Is this shoe lacing technique effective at preventing blackened toe nails?

See: Reddit: LPT: How to lace your running shoes (June 7, 2015) Reddit: Black toes from ultimate? (May 20, 2015) Runner's World: How To Lace Shoes: Prevent Black Toe Nails (March 4, 2011) They link ...
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1answer
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Are physically attractive people more likely to be right wing politically?

The Guardian recently reported this: It is a finding unlikely to prove popular with Guardian readers, but a study has concluded that attractive people are more likely to be rightwing. The study ...
34
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1answer
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Can you get your legs stuck around a pole, leading to cramping and then death?

I came across this video that makes a series of claims based around a position that a person can apparently get stuck in around a pole, and unintentionally kill themselves: Tied up without a rope (...
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Does salt (or sodium) not make you thirsty?

This is from a Toronto MS thesis: High dietary sodium intake is hypothesized to increase food intake (FI), fluid intake and glycemic response. Two short-term randomized repeated-measures studies ...
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Can canning tomatoes while menstruating spoil the tomatoes?

My wife was recently canning tomatoes, and her aunt asked if she was on her period because supposedly that will ruin the batch. Her grandmother is the one that taught her aunt, but neither of us had ...
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2answers
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Is the comeback of measles in the US “largely due to anti-vaxers?”

From CNN: In some recent years, there have been fewer than 100 cases nationwide. But the [measles] virus has made a comeback in other years, including 2019 -- largely due to anti-vaxers, experts ...
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Does UA Rush bodywear improve athletic performance?

Under Armor is selling a products made from a new fabric called Rush. During performance, the body emits heat. The responsive UA RUSH fabric absorbs that heat and converts it into infrared energy ...
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Is Texas, a relatively warm state, one of the leading states in hypothermia deaths?

This April 11, 2019 article on National Geographic about lost hikers and survival rates states (emphasis added): In Herrington’s wilderness survival courses, he teaches day hikers to pack a puffy ...
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1answer
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Does frequent sex cause vaginas to become permanently stretched?

This is a common belief, sometimes used to shame women - that virgins have 'tight' vaginas and women who partake in more sexual intercourse have 'loose' vaginas due to permanent stretching. Is this ...
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9answers
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Can trained humans run faster than all other animals on a marathon distance?

During the athletics world championship, a commentator mentioned casually during the marathon discipline that humans are faster over long distances than all animals. I'm unsure if this can be said ...
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Does “power posing” affect testosterone and cortisol levels?

Social psychologist Amy Cuddy gave a TED talk in which she claims that adopting certain postures: can affect testosterone and cortisol levels in the brain. Business Insider Australia summarised it ...
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3answers
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Does the color temperature of a computer screen affect sleep patterns?

There's a little tool called f.lux that claims: During the day, computer screens look good — they're designed to look like the sun. But, at 9PM, 10PM, or 3AM, you probably shouldn't be looking at ...
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0answers
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Does your hair grow faster when you're sick?

A friend told me that when you're sick, your hair grows faster. When I started asking a lot of questions, my friend said it's a known fact but she doesn't remember where she heard it first or what was ...
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1answer
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Are sports drinks more effective at hydrating athletes than water?

A FiveThirtyEight article, You Don’t Need Sports Drinks To Stay Hydrated challenges that sports drinks help prevent dehydration or increase exercise and performance better than water. It claims that ...
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Does the tongue have different taste zones?

I've seen quite a few of these "tongue maps", showing discrete borders between taste zones and often conflicting setups, like these two: Anecdotally, I can feel all tastes all over the tongue, more ...
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Can the size and shape of penis be enhanced permanently?

A very good friend of mine went to the UK for his master's two years ago. After his breakup and several hookups (via online dating sites), he told me that he is very depressed, especially after one of ...
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Are two layers better at insulating body heat than one double-thickness layer? [closed]

It is almost universally recommended that wearing multiple layers of clothing is the most effective way to stay warm in cold weather, compared to one thicker layer, although there seems to be little ...
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Do cold baths prevent flu?

A coworker of mine said that he never get any flu because he takes cold baths. I found this (very pseudoscientific-like) link defending this theory: https://ownyourhealth.wordpress.com/2007/09/20/...
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Does standing as opposed to sitting or lying improve brain activity?

I've been hearing since grade school that standing straight improves brain activity, that you will be able to think clearer, faster, better, etc. Mostly, it's teachers who say that, but I have yet to ...
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1answer
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Does eating certain food types alter your body temperature?

Many articles claim that some foods will lower your body temperature, or prevent you overheating, and others will warm your body temperature. Some of the temperature-lowering claims are due to the ...
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Is there a relation between brain physiology and gender identity?

I recently came a cross a blog post that talked about DSD or Intersexuality as they rather call it. One of the claims that was made is that gender identity (that is, whether I think of myself as male ...
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Is this 10 pack real?

I saw this video where a guy shows he has a 10 pack. Then in the comments people explain the human body only has 8 ab muscles. Some claim the bottom two muscles are implants. Can this be real, or ...
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1answer
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Do electromagnetic fields affect stress and the fight or flight response?

ArmoredSkeptic said on a recent video about ghosts that: EM fields actually trigger our fight or flight response Is that true?
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1answer
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Does blood type affect what type of food is best for you?

I remember that, a few years ago, my parents were told that different blood types need to eat differently. From a quick look online, it seems to be called "Eat Right For Your Type." It claimed that, ...
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Is it possible to increase the breast size of a woman through massage?

Caitlin MacKenna writes in Increase a Cup Size in 30 Days with Breast Massage: If you massage your breasts for 20-30 minutes a day, they should grow one cup size larger in 30 days. Massage ...
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Are there diseases that correlate with an “endocannabinoid deficiency”? [closed]

There was a study published in Neuro Endocrinology Letters by Dr. Ethan Russo in 2004 that says many diseases being treated with cannabis correlate with an “endocannabinoid deficiency”, but I cannot ...
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Did David Blaine hold his breath for 17 minutes?

David Blaine (born David Blaine White; April 4, 1973) is an American magician, illusionist and endurance artist. He is best known for his high-profile feats of endurance, and has made his name as a ...
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Does giving a drug to a former addict cause reestablishment of chemical dependence?

Joel Spitzer, an anti-smoking counsellor, claimed on whyquit.com that there is a law of addiction which is: The law of physiological addiction states administration of a drug to an addict will ...
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Could smoking cause erectile dysfunction?

I was told that smoking 'menthol' cigarettes could cause erectile dysfunction. But I don't know how much of this is true so I wanted to know how much of this is true... Here is an example of the ...
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1answer
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Does vegetarian sweat smell better?

I've read this article online in a Belgian newspaper (in Dutch): Weet wat je zweet: deze 7 dingen wist je nog niet over zweten — HLN. Number 4 is saying that vegetarian sweat smells better then non ...
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1answer
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Is there a Chinese boy who can read in almost-perfect darkness?

Some news story now circulating states that A BOY has stunned medics with his ability to see in pitch black with his cat's eyes that glow in the dark. Doctors have studied Nong Youhui's ...
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3answers
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Could someone dig themselves out of a grave?

Some notable stories and movies show characters being buried alive, and then digging themselves out. This has apparently happened in reality, such as this story: Girl digs self out of grave, points ...
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1answer
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Can a woman lift a 1.5 ton car?

The Christian Post A woman lifted a car to save her dad, according to reports in an amazing and daring rescue. L. K. is reported to have lifted the 1.5 ton car [BMW 525i] off of her father in an ...
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1answer
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Does the average European adult weigh 71kg?

The Daily Mail says that the average weight of both males and females in Europe is UN 70.8kg in this article: http://www.dailymail.co.uk/sciencetech/article-2160934/Overweight-obese-threaten-world-...
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2answers
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Did an Indian baby spontaneously combust 4 times?

I was just reading the "news". There's a story going around about a baby in India who has spontaneously combusted 4 times. The story has turned up in numerous "news" sites around the globe. "A ...
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1answer
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Do mechanical techniques for penis enlargement work?

According to several different penis enlargement companies, and an unsourced claim on Wikipedia, men have been trying to enlarge their penis for over 2,000 years. Over the years, many different ...
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0answers
488 views

Does carrying or consuming onions help to prevent heatstroke and/or reduce your body temperature?

Will consuming onions help to reduce your body temperature, or prevent heatstroke? Some common variations of this claim include applying onion juice to your skin, or even just carrying an onion in ...
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1answer
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Does raising your arm in the air help when you are coughing/choking on something?

When I was younger I once choked on some food and started coughing heavily, my Dad then told me to raise my arm in the air in order to "help raise the diaphragm". It actually helped with the coughing ...
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Do Vacuum Constriction Devices (penis pumps) work 50-80% of the time for erectile dysfunction?

The authoritative WebMD site has an article Erectile Dysfunction: Vacuum Constriction Devices: A vacuum constriction device (VCD) is an external pump with a band on it that a man with erectile ...
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0answers
11k views

Does bathing in chlorinated water ruin your tan?

Does bathing in swimming-pools (e.g., at hotels or water parks), where chlorine is added to the water, brighten your skin? I've heard from many different people that bathing in pools with chlorine ...
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Getting ill because of staying in a draft/draught?

In Germany it’s a common belief that drafts/draughts can make you ill. Because of that, car and train windows typically get/stay closed, even when it’s really hot; and, for instance, on a warm day in ...
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Does wearing summer clothing during the winter increase your tolerance to the cold?

My dad could tolerate long periods of time outside during the winter while wearing shorts and a t-shirt. He told me he started wearing warmer-weather clothing during the winter, and eventually his ...
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1answer
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Is it possible to cause a skin burn by telling a hypnotized subject they are touching a hot object?

I've read somewhere long ago that the following suggestibility experiment was performed: The experimenter asks the subject to hold their palm open, then tells them: "I'm going to put a very hot ...
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1answer
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Did the study mentioned by “The virginity fraud” TEDx Talk happen?

During 2017's TEDx Oslo Talk The virginity fraud, the presenters refer to a (supposed) study on the reliability of virginity testing around 9:15 mark: The absurdity of virgin testing is illustrated ...
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1answer
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Does a lobster feel little/no pain when boiled alive?

Image Source I have just read Cracked.com's "9 Ridiculous Cooking Myths You Probably Believe", that claims: [...] because [the lobster's] nervous system isn't very complex, so it's feeling little ...