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.

Filter by
Sorted by
Tagged with
6
votes
0answers
193 views

Can mattresses relieve scoliosis pain?

I found a lot of reviews of mattresses that claim they can help with back pain from scoliosis. I was really surprised because I haven't heard about them before. Here are some examples: ...
8
votes
1answer
596 views

Did the Chinese chairman Xi Jinping carry 100 kg of wheat and walk 5 km of mountain road without switching shoulders?

In the first episode Liang Jia He (Chinese: 梁家河篇) of the series Chairman Xi's Beginning (Chinese: 習總書記的初心), Xi said (in Mandarin Chinese) 因爲我那時候,抗 200 斤麥子,十里山路不換肩的 ... because I, at that time, ...
5
votes
0answers
287 views

Does slapping parts of your body increase blood flow and help with physical activity?

I have believed for quite some time that slapping limbs is "good for blood circulation", without ever looking more into it. After getting curious about it, I found a lot of claims that it's ...
32
votes
2answers
11k views

Do people carry around up to 20 lbs (9 kg) of poop?

The claim from this site: It’s been said that the average American carries around between 5-20 extra pounds of poop in their intestines. It's hard to believe it's true. Is there a medical evidence ...
7
votes
2answers
570 views

Does synthetic vitamin C contribute to the formation of genotoxins that can lead to cancer?

While researching Vitamin C supplements, I noticed dozens of people outraged about various companies slipping in "synthetic vitamin c" (ascorbic acid). From what I can tell this aversion ...
38
votes
1answer
9k views

Are blue light filters, not blue lights, on phones and computer screens harmful to sleep?

These existing questions ask whether the blue lights, not blue light filters, from computer screens affect sleep: Does blue light from screens (phone, computer, TV) before sleep affect sleep? Does ...
0
votes
0answers
1k views

Do dramatic cases of body shaking and trembling in religious settings have supernatural causes? [closed]

There are many examples of people experiencing dramatic body shaking and trembling in religious settings, such as the ones below: Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 ...
14
votes
3answers
813 views

Can the human body significantly build muscle while losing body fat?

The fitness community often says that you can't slim down and build muscle at the same time. The reason for this is said to be that the body is in a “catabolic state” with calorie deficit. In order to ...
8
votes
2answers
4k views

Does it take two weeks for a single man to produce enough sperm to impregnate every fertile woman on Earth?

Fact Slides has a slide that claims: A single human male produces enough sperm in two weeks to impregnate every fertile woman on the planet. It sources a book of random facts Is it true?
10
votes
1answer
522 views

Static contraction training: is working out for 25 seconds once a month enough to build muscle?

According to conventional wisdom, in order to get results in a timely manner, one should train multiple days a week lifting weights for several sets of 1–5 reps for strength and 6–12 reps for ...
78
votes
1answer
12k views

Does milk make your bones stronger?

It's a common notion that milk makes bones stronger; milk contains calcium and bones contain calcium. But obviously it's not the case that calcium ingested is immediately deposited into bones. In fact,...
8
votes
1answer
434 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. ...
10
votes
1answer
763 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 ...
0
votes
0answers
164 views

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 ...
3
votes
1answer
531 views

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 ...
4
votes
2answers
501 views

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 ...
25
votes
2answers
2k views

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 ...
11
votes
1answer
2k views

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 ...
5
votes
1answer
869 views

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 ...
12
votes
2answers
2k views

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 ...
2
votes
1answer
476 views

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?
2
votes
0answers
95 views

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 ...
41
votes
1answer
12k views

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 ...
2
votes
0answers
698 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 ...
34
votes
1answer
7k views

Did The Lancet publish an account of a woman who did not age?

Mary Baker Eddy, the founder of the Christian Science religion, claimed in Science and Health with Key to the Scriptures*, Ch. 8, p. 245:1-15: The error of thinking that we are growing old, and the ...
44
votes
1answer
14k views

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 ...
6
votes
1answer
907 views

Does the “4-7-8” method help to fall asleep faster?

The "4-7-8" technique involves controlling your breath for a brief time to encourage falling to sleep faster. Each number consists of the period of seconds you spend during a certain part of ...
18
votes
1answer
2k views

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 ...
8
votes
0answers
5k views

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 ...
2
votes
0answers
287 views

Does orientation relative to the Earth's magnetic poles affect humans during sleep? [duplicate]

So generally in India they told you, you should not put your head to the north and sleep. [...] Suppose you are anemic and you go to your doctor what does your doctor prescribe for you? Iron. ...
11
votes
0answers
570 views

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 ...
45
votes
5answers
9k views

Can venomous snakes be determined by these pupil, nostril and scale patterns?

This image was recently shared by an Australian Facebook friend: The source appears to be a Facebook post of a man from India with a staggering 380,000 shares from around the world! There are ...
14
votes
0answers
9k views

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 ...
4
votes
0answers
187 views

Does dark chocolate benefit athletic performance?

Dark chocolate has been "proven" to increase the performance of (amateur) athletes competing in endurance sports. Some sources: fitnessmagazine.com Deakin University The Telegraph ... and many more. ...
28
votes
1answer
2k views

Is there a point of no return when starving to death?

I was looking at this image on Wikipedia of two children during the Russian famine of 1921-1922. The caption reads (my translation): Famine in Russia. III. The two stages of hunger: the skeletal ...
7
votes
1answer
680 views

Are there as many neurons in the human gut as there are in the head of a cat?

I've got a gut-related condition and saw this claim on the BBC [The stomach's] complex work is under the control of what's sometimes called "the little brain", a network of neurons that line your ...
4
votes
0answers
893 views

Has anyone used yoga to live for supernatural lengths of time?

According to this commentary on the Bhagavata Purana by Swami Prabhupada: By controlling the breath, the perfect yogī can continue his life for as long as he likes. Sometimes we hear from the Vedic ...
0
votes
1answer
671 views

Were humans placed on Earth by aliens?

This 2013 Daily Mail article quotes the claims of the book Humans are not from Earth: a scientific evaluation of the evidence by Dr Ellis Silver. A U.S. ecologist has claimed that humans are not ...
6
votes
1answer
4k views

Does running cold water on your wrists cool you down rapidly?

It's that time of year where I've started to hear it repeated that running cold water over your wrists is a way to rapidly cool down. The theory goes that blood is close to the surface in this area ...
8
votes
1answer
1k views

Is 1,7% of the population born intersex?

Article published by the BBC claims: Although there are no reliable statistics on how many Kenyans are intersex, doctors believe the rate is the same as in other countries - about 1.7% of the ...
7
votes
1answer
3k views

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 ...
16
votes
1answer
49k views

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 ...
4
votes
1answer
4k views

Does eating burnt toast neutralize ingested poison?

A doctor told me today that eating burnt toast along with tea is a remedy for poison. Apparently the burnt part of the toast acts like activated charcoal and adsorbs the poison you've ingested, and ...
5
votes
1answer
508 views

Did Einstein's brain weigh less than the average?

Many web-sites claim that Einstein's brain was smaller than average. For example, in this 2005 phys.org article: Einstein’s brain weighed only 1,230 grams, less than the average adult brain which ...
6
votes
1answer
1k views

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 ...
2
votes
0answers
170 views

Can you power a smartwatch by your body heat? [closed]

I stumbled across this indiegogo page for a new kind of smartwatch. It promised to that you never have to charge it because it will be powered by your body heat. Now i'm wondering, can you really ...
3
votes
0answers
320 views

Are left-handed people better at mathematics?

During a math exam, I was told: "You are left-handed, you should become a mathematician." I searched online and, sure enough, there are some web-sites claiming that left-handed people tend to be ...
1
vote
0answers
243 views

Did György Sherfezi fall from the 10th floor on a passing Laszlo Karvasha and both survived?

Some researchers of Coincidence insist on the veracity of the story: "A resident of Budapest György Sherfezi fell out of the 10th floor window and landed on a passing Laszlo Karvasha. Exactly one ...
14
votes
1answer
6k views

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 ...
6
votes
2answers
8k views

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 ...

1
2 3 4 5
7