(Bot issues are preventing further tweets right now. I don't have a timeline for fixing it. Apologies.)

Adrenochrome is not harvested from living people and has no use as a recreational drug. Hunter S. Thompson conceived a fictional drug of the same name in his book Fear and Loathing in Las Vegas, apparently as a metaphor and unaware that a real substance by that name existed.

Half of body heat is not lost through the head, and covering the head is no more effective at preventing heat loss than covering any other portion of the body. Heat is lost from the body in proportion to the amount of exposed skin.

The lung's alveoli are not tiny balloons that expand and contract under positive pressure following the Young–Laplace equation. The tissue structure is more like a sponge with polygonal spaces that unfold and fold under negative pressure from the chest wall.

Cremated remains are not ashes in the usual sense. After the incineration is completed, the dry bone fragments are pulverized by a machine called a Cremulator—essentially a high-capacity, high-speed blender—to process them into "ashes" or "cremated remains".

Sudden immersion into freezing water does not typically cause death by hypothermia, but rather from the cold shock response, which can cause cardiac arrest, heart attack, or hyperventilation leading to drowning.

Urine is not sterile, not even in the bladder.

Swallowing gasoline does not generally require special emergency treatment, as long as it goes into the stomach and not the lungs, and inducing vomiting can make it worse.

Exercise-induced delayed onset muscle soreness is not caused by lactic acid build-up. Muscular lactic acid levels return to normal levels within an hour after exercise; delayed onset muscle soreness is thought to be due to microtrauma from unaccustomed or strenuous exercise.

Stretching before or after exercise does not reduce delayed onset muscle soreness.

Exposure to a vacuum does not cause the body to explode or internal fluids to boil. Instead, it will lead to a loss of consciousness once the body has depleted the supply of oxygen in the blood, followed by death from hypoxia within minutes.

Human blood in veins is not actually blue. Veins below the skin can appear blue or green due to light subsurface scattering through the skin and aspects of human color perception. Many medical diagrams use blue for veins and red for arteries, contributing to this misconception.

Drowning is often inconspicuous to onlookers. In most cases, the instinctive drowning response prevents the victim from waving or yelling (known as "aquatic distress"), which are therefore not dependable signs of trouble.

Waking up a sleepwalker does not harm them. Sleepwalkers may be confused or disoriented for a short time after awakening, but the health risks associated with sleepwalking are from injury or insomnia, not from being awakened.

Sleeping in a closed room with an electric fan running does not result in "fan death", as is widely believed in South Korea.

The Amazon rainforest does not provide 20% of Earth's oxygen. Due to respiration by the resident organisms, all ecosystems have a net output of oxygen of approximately zero. The oxygen currently present in the atmosphere was accumulated over billions of years.

The Earth's interior is not molten rock. Solids with a large Rayleigh number can also convect, given enough time, which is what occurs in the solid mantle due to the very large thermal gradient across it. The Earth's outer core is liquid, but it is liquid metal, not rock.

The Yellowstone Caldera is not overdue for a supervolcano eruption.

Heat lightning does not exist as a distinct phenomenon. What is mistaken for "heat lightning" is usually ordinary lightning from storms too distant to hear the associated thunder.

The idea that lightning never strikes the same place twice is one of the oldest and best-known superstitions about lightning, but has no basis in evidence. Lightning strikes the Empire State Building in New York City about 100 times per year.