26Bicycle rider
Gyroscopic forces or geometric trail are not required for a rider to balance a bicycle or for it to demonstrate self-stability. Although gyroscopic forces and trail can be contributing factors, it has been demonstrated that those factors are neither required nor sufficient by themselves.
27. There is no physiological basis for the belief that having sex in the days leading up to a sporting event or contest is detrimental to performance. In fact it has been suggested that sex prior to sports activity can elevate the levels of testosterone in males, which could potentially enhance their performance.
28. Humans have more than the commonly cited five senses. The number of senses in various categorizations ranges from 5 to more than 20. In addition to sight, smell, taste, touch, and hearing, which were the senses identified by Aristotle, humans can sense balance and acceleration (equilibrioception), pain (nociception), body and limb position (proprioception or kinesthetic sense), and relative temperature (thermoception). Other senses sometimes identified are the sense of time, itching, pressure, hunger, thirst, fullness of the stomach, need to urinate, need to defecate, and blood carbon dioxide levels.
29. Drowning is often inconspicuous to onlookers. In most cases, raising the arms and vocalizing are impossible due to the instinctive drowning response. Waving and yelling (known as "aquatic distress") is a sign of trouble, but not a dependable one: most victims demonstrating the instinctive drowning response do not show prior evidence of distress.
30. A vegetarian or vegan diet can provide enough protein for adequate nutrition. In fact, typical protein intakes of ovo-lacto vegetarians and vegans meet and exceed requirements. However, a vegan diet does require supplementation of vitamin B12 for optimal health.
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31James Watt
James Watt did not invent the steam engine, nor were his ideas on steam engine power inspired by a kettle lid pressured open by steam. Watt improved upon the already commercially successful Newcomen atmospheric engine in the 1760s and 1770s, making certain improvements critical to its future usage, particularly the external condenser, increasing its efficiency, and later the mechanism for transforming reciprocating motion into rotary motion; his new steam engine later gained huge fame as a result.
32. Rust does not cause tetanus infection. The Clostridium tetani bacterium is generally found in dirty environments. Since the same conditions that harbor tetanus bacteria also promote rusting of metal, many people associate rust with tetanus. C. tetani requires anoxic conditions to reproduce and these are found in the permeable layers of rust that form on oxygen-absorbing, unprotected ironwork.
33. Drinking milk or consuming other dairy products does not increase mucus production. As a result, they do not need to be avoided by those with the flu or cold congestion.
34. Earwigs are not known to purposefully climb into external ear canals, though there have been anecdotal reports of earwigs being found in the ear. Entomologists suggest that the origin of the name is actually a reference to the appearance of the hindwings, which are unique and distinctive among insects, and resemble a human ear when unfolded.
35. Dyslexia is not a cognitive disorder characterized by the reversal of letters or words and mirror writing. It is a disorder of people who have at least average intelligence and who have difficulty in spelling words, reading quickly, writing words, "sounding out" words in the head, pronouncing words when reading aloud and understanding what they read. Although some dyslexics also have problems with letter reversal, that is not a symptom that is characteristic of dyslexia.
