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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448 views

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 ...
5
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1answer
481 views

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 ...
16
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0answers
283 views

Does stretching help children grow taller?

This article claims: Stretching is a great way to increase height. Get your child to start with simple stretches like the wall stretch. Make him stand against a wall with the back towards it. ...
17
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1answer
1k views

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 ...
8
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2answers
769 views

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 ...
14
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1answer
2k views

Can the explosion of a pressure cooker kill you?

According to this XKCD what-if?, the explosion of a pressure cooker is not dangerous in itself, the heat is the sole danger. They can explode, in a sense, but not as violently as you might fear ...
5
votes
1answer
326 views

Does rubbing a bruise help against haematomas?

My parents always told me to rub firmly directly after I bruised myself, say after a hit with a blunt object (without damage to the skin). The explanation would be that this helps against haematomas ...
10
votes
2answers
589 views

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 ...
19
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1answer
593 views

Does sleeping naked in a sleeping bag keep you warmer?

The most popular question on outdoors.SE is Is it warmer to sleep naked in a sleeping bag? Now, all the answers over there are not properly researched and it was suggested in one of the ...
7
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1answer
287 views

Do you bleed more when drunk?

While my friend was getting a tattoo the tattoo artist said you'll bleed more because you're drunk. Is this true?
-6
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1answer
305 views

Can a woman get pregnant after only one instance of intercourse? [closed]

A lot of people believe that a woman can get pregnant the first time she has intercourse. Is this true?
10
votes
1answer
1k views

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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0answers
100 views

Does drinking beer help to cure a hangover? [closed]

It's been a long-known saying that drinking beer cures hangover. It is said that a hangover is your body craving for alcohol, so drinking a beer helps the body. Is it true?
6
votes
1answer
540 views

Do pregnant women “glow”?

In fiction it's as common as dirt to hear "you're glowing" as a response to news that someone is pregnant or an indication of it without it being said. This doesn't seem to be limited to just ...
3
votes
0answers
188 views

Does neck-strengthening exercise prevent knockouts in boxing?

There are sites that claim stronger necks help prevent knockouts when boxing... For example: Livestrong Most boxers work hard to strengthen their legs for a good, strong base and their arms for a ...
6
votes
0answers
209 views

Can sighted people learn to read braille by touch at a level comparable to blind individuals?

I've been told by a friend who works at a school for the blind that no sighted person has ever learned to read braille by touch at the level that is comparable to a literate blind person. Is this ...
7
votes
0answers
188 views

Are bodily deficiencies “mapped” to facial acne?

There's a picture and body of text making its way through Tumblr again: What is your acne telling you? 1 & 2: Digestive System — Eat less processed or junk food, reduce the amount ...
53
votes
2answers
9k views

Is this André the Giant's hand holding a can of beer?

Is this a genuine image of the hand of André René Roussimoff (André the Giant) holding an everyday 12-ounce (350 mL) can of beer? Uproxx and reddit suggest it's real (and word is he once drank ...
3
votes
1answer
302 views

Are 75% of cells in the human body non-human? [duplicate]

A recent issue of the Swiss popular science magazine "Beobachter Natur" contains an article about microbes in which the following claims are made: 75% of the cells in our body are non-human, however ...
4
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0answers
198 views

Is a fistula through a torso possible?

I recently read about the "Huamn Pincushion" Mirin Dajo who used to apparently pierce his own torso on stage. All the reports seem to agree, that this was not fake. X-Ray images and video footage ...
7
votes
1answer
476 views

Does cutting or shaving the hair of infants cause better hair regrowth?

An earlier Skeptics Stack Exchange question asks: If you shave or wax, will the hair grow back stronger or thicker? However, I am interesting in a more specific claim: that shaving the head of an ...
11
votes
1answer
716 views

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 ...
18
votes
0answers
1k views

Is Shaolin monk Hu Qiong using “Chi energy” to withstand an electric drill?

In one of the episodes of Stan Lee's Superhumans (the excerpt in question can be viewed here) a Shaolin monk named Hu Qiong claims that by training his body and "transfering Chi to the right part of ...
4
votes
1answer
110 views

Amongst the 60% of the population that have different size feet, is the left foot 80% of the time the larger foot?

http://www.quadcitiesrealestate.com/SHOE_ARTICLES/Different_Size_Feet.htm says: First, you should know that 60% of the population have different size feet that we will pick up when measuring. ...
1
vote
0answers
181 views

Does running, short or long distance, cause muscle loss?

I often hear the claim that running promotes muscle loss. To what extent is this true? If a person is a triathlete don't they need bot cardio and muscle? Does it matter what distance is run and the ...
3
votes
1answer
788 views

Are “ectomorph”, “mesomorph” and “endomorph” valid and useful descriptors?

In the 1940s, American psychologist William Herbert Sheldon formulated the theory of constitutional psychology. One of the proposals in this theory is that there are three basic elements, or ...
1
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0answers
183 views

Tensile strength of bone & the bible [closed]

The Bible says that Samson "found a moist jawbone of a donkey, and put forth his hand and took it, and killed with it a thousand men." How many Philistines could one actually slay with the moist ...
6
votes
0answers
10k views

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 ...
4
votes
2answers
363 views

Can the digit ratio predict personality or behavior?

Recently I hear more and more often about the correlation between the digit ratio and the behavior of a person (or even his successes studying scientific subjects, etc.) Are there any large-scale ...
6
votes
0answers
468 views

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 ...
6
votes
4answers
364 views

Do the types of food affect a calorie restricted diet?

Can food type have any effect on weight loss even though net calories would remain constant? For example, The Fast Diet FAQ, which is a diet based on Intermittent fasting, contains the following ...
17
votes
1answer
1k views

Does drinking alcohol dehydrate you?

I've often thought that it doesn't and that this was just a myth, and this BBC article backs me up: but [water] can be contained in food, alcohol or caffeinated beverages. Yes, beer and ...
4
votes
0answers
149 views

Do stress-protection deodorants work better for stress sweat?

Many deodorant manufacturers claim that they have products specifically targeted to prevent stress sweating, or "emotional sweating" as I have seen. Some examples come from Nivea and Vichy. Did ...
2
votes
1answer
218 views

Are positive ions bad for you?

It is a widely held belief that "negative ions" in the atmosphere are good for you (see this article on WebMD). Some sources (see this word document from Fayetteville State University) say that ...
10
votes
1answer
5k views

Is it good to drink Coke when sick?

I have always been told by my mom that when I feel nauseous, I should drink Coke. I've heard many people say the same. Is it true that it is good to drink Coke when you're feeling nauseous? If yes: ...
20
votes
1answer
873 views

Do headless chickens run around?

It's a clichè that is constantly repeated by the likes of Gordon Ramsey: You are running around like headless chickens! source Also, for example, they do in South Park animations Do ...
0
votes
0answers
173 views

Does the removal of body hair increase hair growth on scalp?

According to this MSN post Androgens, the group of hormones responsible for hair loss, are also linked to prodigious body hair and beard growth. Some studies suggest that regular removal of body ...
6
votes
2answers
423 views

Can eating sugar result in addiction?

I am surprised to see this video on TED claiming that sugar can lead to addiction (differently from other kinds of food, for example broccoli). So, yes, over-consumption of sugar can have ...
24
votes
1answer
1k views

Can the body never lose fat cells?

There are various articles online quoting studies (or even loosely referring to "studies" without reference) claiming you can only gain fat cells but not loose them. Some examples include ...
7
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0answers
262 views

Can “Current Mohan” conduct high levels of electrical current through his body?

I saw this episode of Stan Lee's Superhumans featuring Raj Mohan Nair, also known as "Current Mohan". He seems to be able to conduct electric current through his body to power up household electrical ...
12
votes
1answer
942 views

Do long-haired men have better intuition?

I found an article on Worldwide Hippies which describes a military experiment on the intuitive abilities of Native American trackers: Then they would pair two men together who had received the ...
3
votes
1answer
440 views

Does the alcohol content of drinks make you fat?

One of the many arguments used to try and persuade us to drink less is that the calorific content of alcohol contributes to obesity. For example, this article from the UK NHS Choices website argues, ...
8
votes
2answers
2k views

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 ...
3
votes
1answer
576 views

Is umami a real flavor, or a marketing strategy?

I've been watching today's Paul Hollywood's Pies and Puds, and they have just had a shown a segment where they create seaweed dessert to sample a fifth human taste, umami. Apparently the perception ...
21
votes
1answer
6k views

Are all the atoms in our bodies replaced on a regular basis?

In a related question, Are all cells of the human body completely replaced every seven to ten years?, it is explained that there are cells in the human body, like neurons, that are never replaced. ...
3
votes
0answers
1k views

Do bodybuilders achieve 2-4% bodyfat percentage during competition?

Wikipedia says: Certified personal trainers will suggest to male bodybuilders that they aim for a body fat percentage between 2–4% by contest time. However it is unclear that such levels are ever ...
4
votes
1answer
401 views

Do memory foam mattresses cause inflammation?

According to a competitor, [...] the visco memory foam mattress cuts off circulation and increases inflammation. This is in keeping with my personal experience of inflammation. Is that just an ...
30
votes
1answer
4k views

Can you punch someone's nose into their brain?

A persistent tale in martial arts is that one can strike an unfortunate other on the nose in such a way that you drive the cartilege up into their brain. Is this possible? I think some points to ...
3
votes
2answers
163 views

Does MTX treat Psoriatic arthritis?

Psoriatic arthritis is an auto-immune disease that is often treated with methotrexate (MTX). In my case, my doctors assure me that MTX is the right medication for this sickness. However, in the ...
14
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2answers
813 views

Are specific scents sexually attractive to women or men?

The idea that certain fragrances can attract women is often used as a marketing tool to sell deodorants or perfumes for men. The same goes for women and men. They claim that if this product is used, ...