The World Health Day is a global health awareness day celebrated every year on April 7th. It is organized by the World Health Organization (WHO) to raise awareness about the importance of health and promote healthy living worldwide. World Health Day was first celebrated in 1950 and has since become an important annual event. 

Each year, WHO chooses a specific theme for World Health Day, highlighting a particular global health aspect.  The theme of 2023 is “Health Equity, Health for All” ensuring everyone gets access to all the healthcare facilities without partiality or inequality differences.

On World Health Day, various activities are carried out globally to raise awareness about health-related issues and promote healthy living. However, the specific activities may vary depending on the theme and focus of the day, as well as the local context and resources available. Some of the activities that may take place include:

1. Health campaigns: Public health campaigns may be launched to raise awareness about specific health issues, such as disease prevention, mental health, or healthy lifestyle choices.
2. Health screenings: Free health screenings may be offered in communities to identify health risks and provide early detection and prevention of diseases.
3. Workshops and seminars: Educational workshops and seminars may be organized to educate people about health-related issues and how to stay healthy.
4. Public lectures: Public lectures by health experts or medical professionals may be organized to discuss health issues and provide information on prevention, treatment, and management.
5. Exercise events: Exercise events, such as walking or running events, may be organized to promote physical activity and a healthy lifestyle.
6. Fundraisers: Fundraising events may be held to raise money for medical research or health-related causes.
7. Social media campaigns: Social media campaigns may be launched to raise awareness about health issues and promote healthy living.

Thus, World Health Day provides an opportunity for individuals, communities, and governments to come together and take action to improve health outcomes for all.