Eight health misconceptions about reading in the dark

The study clarifies that many common health beliefs are not backed by reliable scientific evidence. For example, drinking eight glasses of water a day is not a strict rule, as individual hydration needs vary depending on several factors, and some situations may require different amounts. Cold weather does not inherently cause illness; viruses are responsible, and environmental changes can increase the likelihood of infection spreading. Regarding physical activity, walking about 7,000 steps daily is sufficient to gain health benefits, rather than the universally recommended 10,000 steps, which are not absolutely necessary. Knuckle cracking does not cause arthritis, and the flu vaccine remains safe and does not cause the disease. Reading in low light may only lead to temporary eye strain. The old myth about the danger of swimming immediately after eating has not been proven. The chances of pregnancy during a period are lower but not impossible, due to the possibility of early ovulation or sperm surviving for several days.

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