[Killing Time] A Collection of Fun Trivia Quizzes You'll Want to Share with Someone

About the same as the Shinkansen

They say a sneeze can reach speeds of about 160 to 230 km/h! The Shinkansen runs at roughly 120 to 230 km/h, so who would have thought a sneeze could be as fast as a bullet train? Knowing this really underscores the importance of wearing masks and minding our manners to avoid spraying others.

cooled white rice

Because cooled white rice contains an increased amount of a component called resistant starch, it is considered effective for dieting. Resistant starch is a type of starch that is difficult to digest; it functions like dietary fiber in the intestines, helping to moderate spikes in blood sugar while also improving gut health. By cooling freshly cooked rice once, the starch changes, which can reduce both caloric intake and absorption efficiency for the same portion size. For this reason, it is recommended for people who are mindful of diet and overall health.

spiciness

Humans can basically perceive five tastes: sweetness, sourness, saltiness, bitterness, and umami. The spiciness you feel when eating foods like curry or mapo tofu isn’t actually a taste; it’s perceived as pain or a temperature sensation. Incidentally, spiciness can help stimulate the appetite and improve nutrient absorption.

about 100,000 times

A human heart beats about 70 times per minute at rest. Converting this to a daily figure, 70 beats × 60 minutes × 24 hours comes to roughly 100,000 beats. The heart works without rest, delivering oxygen and nutrients throughout the body with this vast number of beats. Take good care of your heart to support a healthy life.

skin

The correct answer is the skin. The skin acts as a barrier that protects our bodies from the external environment. In adults, it covers an area of about 1.6 square meters and accounts for roughly 16% of body weight. The skin has many vital functions, including regulating body temperature, enabling sensation, and defending against pathogens. It is a highly unique organ in terms of both structure and function, and it is an indispensable presence that supports our health every day.

brain

Because the brain itself has no pain receptors, the brain does not directly feel pain even if it is injured. For example, during a craniotomy, a patient can have their brain stimulated while conscious and still feel no pain for this reason. Instead, pain receptors are present in the membranes surrounding the brain, the skull, and the skin, and these can feel pain. Therefore, the correct part of the human body that lacks pain sensation is the brain.

child

It’s said that when we’re born, as infants, we have about 350 bones. The small, fine bones called accessory bones fuse together as we grow, and by adulthood we have 206 bones. It’s fascinating that babies actually have more bones, isn’t it?