Day of the biological clock

April 28, Monday

Biological Clock Day is an unofficial international day dedicated to raising awareness about the role of biological rhythms in human life. It is observed annually on April 28. This day serves as a reminder of the importance of aligning one's lifestyle with natural cycles to maintain health and enhance well-being.

What are biological clocks
Biological clocks are internal mechanisms in the body that regulate daily, seasonal, and yearly rhythms. The main ones are circadian rhythms, which are based on a 24-hour cycle and control:

- Sleep and wakefulness
- Body temperature
- Hormone production, such as melatonin and cortisol
- Appetite and digestion
- Levels of activity and alertness throughout the day

History of the observance
The exact origin of Biological Clock Day is unofficial, but it became especially relevant after the Nobel Prize in Physiology or Medicine was awarded in 2017 to three scientists (Jeffrey Hall, Michael Rosbash, and Michael Young) for their discovery of the mechanisms behind circadian rhythms. Their research confirmed that disruptions of natural biorhythms can lead to various diseases.

Aims and objectives of the day
- Raise awareness of the importance of sleep and rest schedules
- Highlight the role of light and darkness in hormone regulation
- Warn about the risks of night shifts and rotating work schedules
- Draw attention to issues such as jet lag and sleep disorders

How it is celebrated
On this day, the following events are often held:
- Educational seminars and lectures on sleep and health
- Online conferences on chronobiology
- Articles and infographics posted on social media
- Doctors and experts offering advice on improving daily routines

Tips for maintaining biological clocks
- Go to bed and wake up at the same time every day
- Avoid bright light before bed, especially from screens
- Spend more time in natural daylight
- Eat and exercise on a regular schedule
- Reduce stress levels and avoid overexertion

Interesting facts
- Biological clocks exist not only in humans but also in animals, plants, and even bacteria
- Disruptions in circadian rhythms can affect mood, immunity, and even blood sugar levels
- Modern technologies, especially artificial lighting and screens, often interfere with natural rhythms.

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Day of the biological clock in other years

2021 April 28, Wednesday
2022 April 28, Thursday
2023 April 28, Friday
2024 April 28, Sunday
2026 April 28, Tuesday

Day of the biological clock in other countries