1. Going out in the cold with a wet head will make you sick
Numerous studies
addressing the topic, people who are chilled are no more likely to get
sick than those who were not. And a wet or dry head makes no difference.
2. Vikings wore horned helmets
Horned hats were not worn by the warriors. Although the style did exist in the region, they were only used for early ceremonial purposes and had largely faded out by the time of the Vikings.
Horned hats were not worn by the warriors. Although the style did exist in the region, they were only used for early ceremonial purposes and had largely faded out by the time of the Vikings.
3. Sugar makes kids go bonkers
The Journal of the American Medical Association published a review of 23 studies on the subject of kids and sugar, the conclusion: sugar doesn’t affect behavior. And it's possible that it is the idea itself that is so ingrained as fact that it affects our perception. Case in point: in one study mothers were told that their sons had consumed a drink with a high sugar content. Although the boys had actually consumed sugar-free drinks, the mothers reported significantly higher levels of hyperactive behavior.
The Journal of the American Medical Association published a review of 23 studies on the subject of kids and sugar, the conclusion: sugar doesn’t affect behavior. And it's possible that it is the idea itself that is so ingrained as fact that it affects our perception. Case in point: in one study mothers were told that their sons had consumed a drink with a high sugar content. Although the boys had actually consumed sugar-free drinks, the mothers reported significantly higher levels of hyperactive behavior.
4. You lose most of your body heat through your head
Everyone knows that you lose somewhere around 98% of your body heat through your head, which is why you have to wear a hat in the cold. Except that you DON'T. As reported in The New York Times and elsewhere, the amount of heat released by any part of the body depends mostly on the surface area — on a cold day you would lose more heat through an exposed leg or arm than a bare head.
Everyone knows that you lose somewhere around 98% of your body heat through your head, which is why you have to wear a hat in the cold. Except that you DON'T. As reported in The New York Times and elsewhere, the amount of heat released by any part of the body depends mostly on the surface area — on a cold day you would lose more heat through an exposed leg or arm than a bare head.
5. You will get arthritis from cracking your knuckles
There is no evidence of such an association between cracking knuckles and arthritis, and in limited studies performed there was no change in occurrence of arthritis between "habitual knuckle crackers" and "non crackers." There have been several reports in medical literature that have linked knuckle cracking with injury of the ligaments surrounding the joint or dislocation of the tendons, but not arthritis.
There is no evidence of such an association between cracking knuckles and arthritis, and in limited studies performed there was no change in occurrence of arthritis between "habitual knuckle crackers" and "non crackers." There have been several reports in medical literature that have linked knuckle cracking with injury of the ligaments surrounding the joint or dislocation of the tendons, but not arthritis.
6. Napoleon was short
Napoleon's height was once commonly given as 5 feet 2 inches, but many historians have now given him extra height. He was 5 feet 2 inches using French units, but when converted into Imperial units, the kind we are accustomed to, he measured almost 5 feet 7 inches tall.
Napoleon's height was once commonly given as 5 feet 2 inches, but many historians have now given him extra height. He was 5 feet 2 inches using French units, but when converted into Imperial units, the kind we are accustomed to, he measured almost 5 feet 7 inches tall.
7. You have to stretch before exercise
Stretching before exercise is the main way to improve performance and avoid injury, everyone stretches … but researchers have been finding that it actually slows you down. Experts reveal that stretching before a run can result in a 5% reduction of efficiency; meanwhile, Italian researchers studying cyclists confirmed that stretching is counterproductive. Furthermore, there has never been sufficient scientific evidence that pre-exercise stretching reduces injury risk.
Stretching before exercise is the main way to improve performance and avoid injury, everyone stretches … but researchers have been finding that it actually slows you down. Experts reveal that stretching before a run can result in a 5% reduction of efficiency; meanwhile, Italian researchers studying cyclists confirmed that stretching is counterproductive. Furthermore, there has never been sufficient scientific evidence that pre-exercise stretching reduces injury risk.
8. Cholesterol in eggs is bad for the heart
The perceived association between dietary cholesterol and risk for coronary heart disease stems from dietary recommendations proposed in the 1960s that had little scientific evidence, other than the known association between saturated fat and cholesterol and animal studies where cholesterol was fed in amounts far exceeding normal intakes. Since then, study after study has found that cholesterol found in food does not negatively raise your body’s cholesterol. It is the consumption of saturated fat that is the demon here. So eat eggs, don’t eat steak.
The perceived association between dietary cholesterol and risk for coronary heart disease stems from dietary recommendations proposed in the 1960s that had little scientific evidence, other than the known association between saturated fat and cholesterol and animal studies where cholesterol was fed in amounts far exceeding normal intakes. Since then, study after study has found that cholesterol found in food does not negatively raise your body’s cholesterol. It is the consumption of saturated fat that is the demon here. So eat eggs, don’t eat steak.
9. Dogs age at seven years per one human year
Your 3-year-old dog is 21 years old in human years, right? Not according to experts. The general consensus is that dogs mature faster than humans, reaching the equivalent of 21 years in only two, and then aging slows down to more like four human years per year.
Your 3-year-old dog is 21 years old in human years, right? Not according to experts. The general consensus is that dogs mature faster than humans, reaching the equivalent of 21 years in only two, and then aging slows down to more like four human years per year.
10. George Washington had wooden teeth
1st president of USA starting losing his teeth in his 20s and most American believe that his dentures were made of wood. NO! Washington had four sets of dentures that were made from
gold, hippopotamus ivory, lead, and human and animal teeth.
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