Surprisingly unknown? Health trivia quiz. A multiple-choice (three options) mini knowledge quiz about health.

30 minutes

When you soak up sunlight, your body produces a substance called serotonin that helps regulate the autonomic nervous system. By balancing this system, various physical and mental discomforts are said to improve. However, too much exposure can be harmful, so aim for about 30 minutes of sunbathing.

2.5 liters

It is said that the water in the human body decreases by about 2.5 liters every day due to breathing, excretion, and evaporation from the skin. Therefore, humans need about 2.5 liters of fluids per day. However, people who sweat a lot due to exercise or work need to increase that amount.

pickled plum

Umeboshi contain a compound called picric acid that helps improve liver function, so it’s said to be good to put one in tea and drink it when you have a hangover. Umeboshi also contain various other healthful components, so try incorporating them when you’re dealing with a hangover.

mint

It’s said that the crisp, refreshing scent of mint can help improve physical and mental discomfort. It can relieve nasal congestion and constipation, regulate the autonomic nervous system, and even help with morning sickness. In addition to simply smelling it, drinking it as mint tea is also recommended.

zinc

Zinc is a very important component for producing hair. When you don’t get enough zinc, it can lead to hair loss and hinder proper hair growth. In addition to supplements, zinc can be obtained from foods such as liver and oysters.

You get shorter at night.

The intervertebral discs, which act as cushions for the spine, get compressed by your body weight throughout the day as you go about various activities. They can change by as much as about 2 cm, so if you’re curious, why not try measuring your height in the morning and at night to see the difference?

8–10 hours

For once-daily medicated patches, it is considered appropriate to remove them after 8 to 10 hours. This is because most of the active ingredients absorbed through the skin are fully delivered within about 8 to 10 hours after application, so keeping the patch on longer is unlikely to enhance its effect. Leaving the patch on the same spot for too long can cause irritation or stuffiness, potentially leading to skin problems, so it’s important to make a habit of removing it after a suitable amount of time.