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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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Does playing basketball help you grow taller?

Some people believe that playing basketball encourages you to grow taller. For example: A Scientific Theory On Why Playing Basketball May Indeed Make Young Teenagers Increase In Height And Grow ...
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Does exposure to cold make body fat easier to burn? [duplicate]

The Facebook pages Weird Facts and WTF recently posted this image. Exposure to cold makes body fat easier to burn. Scientists found that putting ice packs on problem areas can burn extra calories. ...
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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 menstruation affect the ability of women to do blue-collar work?

I just read about the concept of menstrual leave. The Wikipedia article says it originated in Japan, and applies in a couple of asian countries. In 2005, Australian Manufacturing Workers Union ...
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Was Einstein's brain physiologically different?

Einstein's brain has been the subject of much debate and speculation, because of his notable and exceptional contributions to our understanding of the universe. The claim exists that his brain may ...
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Can a lightbulb once inserted into your mouth be safely removed?

There is a viral video going around that repeats a claim I've heard before about getting a light bulb stuck in your mouth Graphic reads, The bulb shape allows it to be put into the mouth, but ...
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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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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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Does chugging Gatorade before going to sleep prevent a hangover in the morning?

Is drinking Gatorade after a night of drinking an effective method for preventing hangovers? A Forbes article claims: You not only lose water when you booze, you also dump electrolytes. These ...
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Does sneezing repeatedly lead to orgasm, or a similar sensation?

This came up randomly during office talk but it goes something as follows; sneezing repeatedly is equivalent to having an orgasm. Some basic research on the internet seems to indicate there is some ...
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Can men mentally rotate images better than women?

Arguing with colleagues about common gender beliefs, someone said that women can multi-task better but men can mentally rotate images better. I sent them the following in response to the first ...
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Is the runner's high a real phenomenon?

Photo by Nathan Rupert - via Flickr The claim is as follows: A publicized effect of endorphin production is the so-called "runner's high", which is said to occur when strenuous exercise takes a ...
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Is tequila a depressant?

I recently read this Buzzfeed article after witnessing excessive drunk crying. It claims: Unlike other forms of alcohol, tequila is not a depressant. As a source, it quotes Esquire: Tequila is ...
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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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Do women have smaller bladders than men?

It is a common belief that women need to go to the bathroom more often than men because of the smaller size of their bladders. Is this true? Are there more factors involved?
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Is the 100m winner the “fastest man”?

The winner of the 100m sprint is often labelled the "fastest man on the planet". Often the average speed over the race is given, but the peak speed seems to reflect the description better. Is there ...
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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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Can a metal plate in the head stop a bullet?

Spoiler alert for those who haven't seen the movie Faster. There is a scene in the movie where the character played by Dwayne "The Rock" Johnson is shot in the back of the head by Billy Bob Thornton ...
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Does drinking coffee or tea dehydrate you?

It is widely claimed that despite being made mostly of water, drinking coffee or tea will actually dehydrate you, because the caffeine is a a diuretic. Here is an example from the SFGate news site ...
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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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Are big ears a sign of intelligence?

Some people claim that ear size and shape is related to intelligence. For example, this writer. Has any real research been done on this?
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Does pre-ejaculate typically contain sperm?

It is typically believed that pre-ejaculate contains sperm, for example Guys leak a bit of sperm out of the penis before ejaculation. This is called pre-ejaculate. source Does a man's pre-...
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Do some people have 'sensitive senses'?

This article says that: If you avoid bright light, loud noises, heavy perfumes and itchy clothing, you may find that you avoid hot and cold foods because you have sensitive teeth. I've ...
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Will holding in your sneeze kill brain cells?

I heard from a friend that holding in your sneeze can actually kill a few of your brain cells. I did a google search, but most of the results had no evidence (e.g. Yahoo Answers). Moreover, I checked ...
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Can you tell someone is hungry based on stomach rumbling?

The stomach rumble (clearly audible sound caused by the digestive system's movements) is a common phenomenon, often believed to be indicative of hunger. It is also a common trope used in fiction to ...
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Are Indians immune to Israeli stink bombs?

Russian Television network, RT report that: An Israeli crowd control stink bomb known as the Skunk, which smells like raw sewage and rotting bodies, destined for employment in the restive region of ...
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Does picking your nose make it grow?

Does pulling/tugging at your soft cartilage cause it to grow? Example of claim on answers.com Don't pick your nose. Compulsive nose picking, known as rhinotillexomania, can increase the size of ...
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Can we see a single candle X miles away?

Recently I saw a commercial for Centrum that claims you can see the light of a single candle from ten miles away. I was skeptical, but a trip to the internet claims that not only is that true, but ...
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Did the Earth have so little oxygen that dinosaurs couldn't exist?

Noted Young-Earth Creationist Kent Hovind made a claim in a 2007 video that suggested that the idea of dinosaurs living on Earth millions of years ago was implauseable if the oxygen levels were the at ...
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Can a person “suspend their pulse”?

The Wikipedia article about Tirumalai Krishnamacharya, the "father of modern yoga", claims During the 1920s, Krishnamacharya held many demonstrations to stimulate popular interest in yoga. These ...
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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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Does foot size correlate to penis size?

I've heard that foot size is linked to the size of a man's penis. Is there any truth to this?
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Is flatus flammable?

Wikipedia deems this topic significant enough to merit its own article: Fart lighting, or pyroflatulence, is the practice of igniting the gases produced by human flatulence, often producing a flame ...
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Is vinegar an effective treatment for arthritis?

I've learned that some people take vinegar to treat arthritis. It's a well known folk cure. Natural News: http://www.naturalnews.com/026715_apple_pain_vinegar.html Learn How to Relieve Arthritis and ...
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Do raster glasses work for improving eyesight?

Similar Questions: Is the Bates Method for improving eyesight efficacious? Strange way of improving eyesight — Could it work? Do raster glasses, like these, work for improving eyesight (if you are ...
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Is the reason for crying related to which eye releases tears first?

Recently I had a glance at this post from #8Fact on Facebook claiming that when you cry out of happiness, the first tear drop comes from your right eye, when you cry out of pain it comes from your ...
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Are there 60,000 miles of blood vessels in the human body?

I have been looking into relative size/volume/surface area of the circulatory system in different species e.g. mouse & man. The only estimates that I could find all quote the same number (60,000 ...
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Does neosporin reduce scarring?

It is a widely held belief, and oft-advertised property of neosporin that its use reduces scarring, especially as opposed to other triple antibiotic ointments. For example: Livestrong Neosporin ...
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Can the UltimEyes app improve distance vision?

I came across the Ultimeyes app and am very concerned many people will be throwing away their money. ULTIMEYES® is a non-invasive interactive program designed specifically to improve vision by ...
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490 views

Does hair fall first from the top of head because of reduced blood supply due to lack of movement?

In this very quackery-like video, it's claimed that hair loss occurs first from the top of the head rather than the side because the latter moves when chewing or doing other facial movements. This ...
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Do body piercings lead to fat gain?

A Facebook friend was concerned by this report Don’t get pierced! Body piercings can raise cortisol levels and lead to fat gain, and no site is as susceptible to fat gain as your abs! If you have a ...
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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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Did a man survive a 30mph fall from a tornado without breaking a bone because he was unconscious?

This segment of the television show "Human Body: Pushing The Limits - Episode 1 - Strength" claims a person was sucked up by a tornado, and when he fell out of it he broke no bones because he was ...
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Did an elderly Chinese woman grow horns?

This video shows a news report of a woman in China who has apparently grown a horn at her old age. Is this a deformity, or some sort of video trick? Is this a scientifically sound phenomenon?
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Do fingers in water get wrinkled due to a nervous system response?

I had always thought that the fingers were getting wrinkled when I left them within the water for a long time due to swelling of the outer layers of skin but I just read in several places that it is a ...
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Do facial expressions cause wrinkles?

Some of my friends think that e.g. smiling leads to having wrinkles around your mouth, where your skin folds when you smile, but I'd also count if someone works in the sun a lot an thus squints all ...
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Does your brain keep thinking for seven minutes after you die?

There is a widely published meme that you keep thinking after you die: After you die, it is believed that you have 7 minutes of brain activity left inside you Obviously it doesn't hold true ...
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Can dead men have erections and ejaculation?

This may sounds funny but when I searched about the question over the Internet, I found an overall report which stated as a conclusion: When the heart stops forcing the blood around the body, it ...
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Are left-handed people more likely to die younger than right-handed people?

Several sources claim that left-handed people have shorter life-spans: A left-handed academic from North Dakota has revealed that left-handers tend to die younger than right-handers. The "generally"...
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Are simian lines and personality correlated?

First, to define what a Simian Line is, I will quote from the Wikipedia page. In humans, a single transverse palmar crease is a single crease that extends across the palm of the hand, formed by ...