Dangerous truths

10 dangerously wrong beliefs—from lightning to antibiotics

Image: Lucian Alexe

We all think we know how the world works, but many "common sense" beliefs are flat-out wrong. From everyday health myths to misunderstood science, these misconceptions can mislead you, waste your time, or even put you at risk. Here are 10 things you are dangerously wrong about, backed by real facts.

Image: Michał Mancewicz

Contrary to popular belief, lightning can strike the same place more than once. Since lightning often targets tall, conductive structures, multiple strikes to the same location are not uncommon.

For example, the Empire State Building is hit an average of 23 times per year. The myth persists because rare events seem unique, but statistics show that repeated strikes are common, especially in high-risk areas.

Image: Roberto Sorin

Antibiotics target bacteria, not viruses. Using them for colds or the flu is ineffective and promotes antibiotic resistance.

Prolonged misuse can lead to resistant bacterial strains, making future infections harder to treat. Correct diagnosis is critical for proper treatment.

Image: Gavia

Bulls are actually color-blind to red. Their reactions in bullfighting are triggered by the movement of the cape, not its color.

The bright red (and similarly striking colors) was likely chosen to make the cape more visible to the human audience from a distance, enhancing the spectacle.

Image: Aman Krishna

Cold therapy offers temporary relief but doesn’t accelerate long-term muscle recovery. Overuse can impair adaptation to training.

Inflammation is part of muscle repair; blocking it too aggressively can reduce strength gains over time.

Image: Janosch Lino

Fluid needs vary by body size, activity, and climate. For some, eight glasses is excessive; for others, insufficient.

Relying strictly on this rule can cause dehydration or overhydration. Thirst and urine color are better indicators.

Image: Arturo Rivera

Even a single sunburn increases your lifetime risk of skin cancer, including melanoma. Peeling skin doesn’t undo DNA damage; it’s actually skin cells committing suicide to prevent the spread of harmful mutations.

Sunscreen, protective clothing, and shade are essential. Ignoring sun safety poses a serious health risk.

Image: Alexey Demidov

Waking a sleepwalker is safe. They may be disoriented or confused, but letting them roam unattended is far more dangerous.

The only real risk is injury from falls or collisions, not the act of waking them.

Image: Myriam Zilles

Fructose in fruit is healthier than processed sugar, but overconsumption still strains the liver and metabolism.

Even "natural" sugars can contribute to obesity, insulin resistance, and diabetes if intake is excessive.

Image: Kelly Sikkema

Sanitizers can’t safely remove all pathogens, especially dirt and chemicals. Washing with soap and water is always more effective.

Over-reliance on sanitizers can actually increase infection risk, particularly during gastrointestinal or respiratory outbreaks.

Image: Precious Plastic Melbourne

Mixing vinegar with bleach, hydrogen peroxide, or other cleaners can create chlorine or peracetic acid fumes—both highly toxic.

Even small amounts can irritate eyes, lungs, and skin. Believing vinegar universally "boosts" cleaning power is dangerous; always read labels and avoid mixing chemicals.

National melodies

10 national anthems with a curious story

The purpose of a national anthem is to foster a sense of patriotism and unity among the citizens of a nation, but there are as many ways to achieve this as there are nations. While some anthems reflect on glorious deeds of the past, others express a shared desire for peace and prosperity, or celebrate love for their country, its lands, its leaders, and, at times, even the leaders of another nation. Let’s take a look at 10 national anthems with curious stories.

We all know the story of how The Star-Spangled Banner was written after a battle, but did you know it was not officially adopted as the national anthem for over a century? Composed during the War of 1812 under the title Defence of Fort M’Henry, it quickly became popular as a patriotic song and was officially adopted by the U.S. Navy in 1889. It was not declared the national anthem until 1931.

Some critics point to references in the third stanza—particularly language interpreted as relating to slavery—as well as the documented views of its author, Francis Scott Key. However, opposition to the song’s adoption at the time was more often based on its difficult vocal range and competition from other popular patriotic songs. Despite these debates, the poem—especially its first stanza—has long been regarded as a symbol of national unity.

Composed in 1572, it is one of the oldest national anthems still in use. The lyrics are written from the perspective of William of Orange—the leader of the Dutch revolt against the Spanish Empire—and reflect his inner struggles between his loyalty to the Spanish King and his duty to his people.

Though the original text has at least 15 stanzas, only the first stanza and sometimes the sixth are sung today, which can be confusing for those unfamiliar with the historical context, as the first stanza ends by declaring undying loyalty to the king of Spain.

After the 1917 Russian Revolution, the newly formed Soviet Union adopted the socialist anthem The Internationale as its national anthem. In 1944, the Soviet government replaced it with a new anthem centered on Soviet Russia, with lyrics that emphasized the Soviet fatherland and Joseph Stalin’s leadership, though it was often performed without lyrics after Stalin’s death.

Following the collapse of the Soviet Union in 1991, the Russian Federation adopted an instrumental piece known as The Patriotic Song, composed in 1833 by Mikhail Glinka. After a decade of debates, and citing the need for an anthem that people could sing, the government decided to restore the former Soviet melody, this time with newly written lyrics.

How many countries can say that they owe their national anthem to a moment of panic? At least one. Malaysia’s national anthem was adopted after its independence from the United Kingdom, using the melody of the anthem of the state of Perak. But where does that melody come from?

When the Sultan of Perak attended the coronation of King Edward VII in 1902, his delegation was asked to provide their state anthem. Not having one, he improvised and adapted the melody of a popular tune from the Seychelles. This melody was later adopted as the official anthem of Perak and eventually became the basis for Malaysia’s national anthem.

Composed and adopted as the national anthem during the Argentine War of Independence, but before the formal declaration of independence from Spain, this song was initially called the Patriotic March. It was much longer than the current anthem, and its lyrics were controversial, as they portrayed Spain as a tyrannical and bloodthirsty nation.

The anthem originally contained nine stanzas—including accusations towards Spain—which were used until 1924, when improved diplomatic relations with Spain and the arrival of thousands of Spanish immigrants led the government to shorten the lyrics and omit the more controversial parts.

Famed for having lyrics in five of the twelve official languages of the country —Xhosa, Zulu, Sesotho, Afrikaans, and English— this anthem was officially adopted after the end of apartheid, and reflects a broader desire for national unity.

The post-apartheid government initially retained the former Afrikaans anthem, while also adopting the Xhosa hymn Nkosi Sikelel' iAfrika (God Bless Africa), which had long been used as a song of resistance. Maintaining two anthems proved impractical, so their lyrics were combined and translated into other majority languages to create a single national anthem that could represent all South Africans.

When Czechoslovakia existed as a single state, it adopted a combined national anthem consisting of the first stanza of the Czech song Kde domov můj ("Where Is My Home?"), followed by the first stanza of the Slovak song Nad Tatrou sa blýska ("Lightning over the Tatras").

After the country’s peaceful dissolution in the Velvet Divorce (1992), Czechia retained Kde domov můj as its national anthem, while Slovakia retained Nad Tatrou sa blýska, which is typically performed with two stanzas and in its traditional form.

Though its lyrics come from a poem dating to the 8th-10th centuries, Kimigayo was not adopted as Japan's national anthem until 1888, and it's one of the world’s shortest anthems. After World War II, it was not officially designated as the national anthem due to its imperial associations, though it continued to be used. It regained formal legal status in 1999.

Often translated into English as His Majesty's Reign, its initial verse is commonly rendered as "may your reign [continue]." The word kimi has historically been used for the emperor, and the song's brief lyrics express a desire for the Imperial reign to endure for thousands of years, "until the tiny pebbles grow into massive boulders."

In a similar fashion to the Wilhelmus, the Netherlands anthem, Andorra’s anthem is also written from a first-person perspective, this time not from an individual but the country itself, remembering its glorious past.

Composed in the early 20th century, it was adopted as the national anthem in 1921. In the lyrics, Andorra presents itself as a princess, daughter of Charlemagne, and describes itself as the "only remaining daughter of the Carolingian Empire."

A relatively new anthem, _Sayaun Thunga Phool Ka_—adopted in 2007—replaced the Shriman Gambhir following the abolition of the monarchy in Nepal. It’s notable for its distinctive melody, upbeat and joyful, quite different from other solemn or martial tone anthems.

The lyrics describe Nepal as a garland woven from hundreds of flowers, stretching from one corner of the country to the other, and emphasize the diversity of its people and landscapes.