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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453 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 ...
11
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0answers
554 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 ...
3
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0answers
66 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. ...
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0answers
124 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
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1answer
273 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 ...
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0answers
157 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 ...
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0answers
6k 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 ...
3
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2answers
257 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 ...
4
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0answers
283 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 ...
1
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1answer
134 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
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1answer
713 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
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0answers
115 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
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0answers
110 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 ...
9
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1answer
2k 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
786 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 ...
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0answers
141 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 ...
4
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0answers
149 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 ...
23
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1answer
600 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 ...
10
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0answers
757 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
330 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, ...
6
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2answers
1k 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
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1answer
447 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 ...
18
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1answer
3k 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
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0answers
733 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 ...
3
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1answer
336 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 ...
20
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1answer
2k 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
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0answers
62 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 ...
11
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0answers
547 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, ...
7
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0answers
2k views

Can you knock someone out with pressure points, in the style of a Vulcan nerve pinch?

Is it possible to pinch someone's nerve (on the shoulder) in a manner similar to the way Spock would do on Star Trek such that the person would either pass-out or result in being temporarily ...
4
votes
1answer
4k views

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 ...
7
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1answer
1k views

Can mobile apps monitor your sleep cycles?

There's already been a question about devices that can help you monitor your sleep and their possible benefits, but I'm interested specifically in the apps for mobile devices that claim to be able to ...
0
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1answer
2k views

Is yogurt affected by human emotions?

The documentary I Am (Wikipedia) makes a number of claims, including that more signals are sent from the heart to the brain than vice-versa, and that the your emotion or mood can have an effect on ...
2
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0answers
132 views

Do out of sync propellors make passengers more likely to be airsick?

In a multi-engine propellor-driven aircraft, propellor synchronization occurs when the two propellors are turning at the same RPM. Propellor synchronization eliminates beating. The purpose is for ...
4
votes
1answer
292 views

Is Eşref Armağan an eyeless painter?

There are a number of articles online about a blind, Turkish painter, Eşref Armağan. born without eyes, including a short Wikipedia entry. Purportedly, he's able to create paintings with color and ...
3
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1answer
1k views

Can people castrate reindeer by biting off the testicles?

This Youtube video depicts a Sami woman castrating a reindeer by biting off the testicles (although the moment suprême is not shown explicitly): Laplander Reindeer Castration (warning: video depicts ...
4
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0answers
2k views

Were giant human bones discovered in Castelnau?

French anthropologist Georges Vacher de Lapouge (1854 - 1936) reported in 1890 the discovery of "the Giant of Castelnau" - giant bones in neolithic tombs, in southern France. According to Mr. de ...
13
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0answers
435 views

Can people lift hundreds of pounds or run faster due to adrenaline?

You often hear stories about fathers lifting cars or heavy trees off their sons when an accident happens, but is there any truth to this? Can people suddenly lift more or run faster than they ...
8
votes
1answer
410 views

How sensitive are human ears?

I read about this on a question on Quora, and found a source for the fact below: When a pin is dropped, the sound reaching the human ear causes the eardrum to move by a distance less than the ...
4
votes
1answer
4k views

What is the Atacama Humanoid?

The Atacama Humanoid is the skeletal remains of a 6-inch (150 mm) humanoid found in the Atacama Desert of Chile in 2003 There have been many different claims as to its origin, including: a ...
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vote
4answers
931 views

How many days can you live without food? [duplicate]

I am a Malaysian. A few days ago, one of my country's political speakers claimed he didn't eat anything for 10 days, and he just survived by drinking water. This phenomenon really make me interested ...
12
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1answer
564 views

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 ...
7
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0answers
239 views

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 ...
9
votes
1answer
5k views

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 ...
9
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0answers
331 views

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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0answers
32 views

Alcohol good or bad? [duplicate]

I see moderate alcohol shows (supposed) benefits for health and long life. I am 42 and experienced a mid life crisis 4 months ago (initially a nervous breakdown). I am slowly getting better but stil ...
33
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2answers
4k views

Are women physically weaker?

I've always thought that "women are weaker1 than men in general" was a biological fact (supposedly stemming/evolving from the social structure of prehistoric humans) However, in this video (~21:36), ...
28
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2answers
50k views

Does it take the same force to bite through a finger as a carrot?

I've heard (multiple times) that your finger is as easy to bite through as a carrot. Here are some places I've seen it proposed: KGBAnswers WikiAnswers Additionally, it is a popular question on ...
1
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1answer
604 views

Are only 5% of Americans naturally blonde?

In his phenomenally thorough study of what the typical porn star looks like (see Is the typical female porn star a big-boobed blonde?) John Millward mentions in passing that: only 5% of Americans ...
5
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1answer
935 views

Is the typical female porn star a big-boobed blonde?

Common opinion seems to believe that the most popular female porn stars are blonds with big boobs. For example, this site from 2010 has Jenna Jameson as the most popular and she fits the description. ...
18
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1answer
3k views

Can Scopolamine turn people into mindless “zombies”?

Vice did a report about scopolamine dubbing it as the world's scariest drug. The story is that people being given that drug can be told to do anything, similar to some popular claims about hypnosis ...