Project ACES Day

Project ACES Day (All Children Exercise Simultaneously) is observed annually on the first Wednesday of May, which falls on May 6 in 2026. Often referred to as “The World’s Largest Exercise Class,” this global initiative aims to combat childhood obesity and promote physical fitness by encouraging millions of children, parents, and educators across more than 50 countries to participate in physical activity at the same time. The event typically begins at 10:00 AM local time, creating a continuous “wave” of exercise that travels around the globe as different time zones reach the designated hour. ¹

See also: National Kids Fitness Day, Recreational Sports & Fitness Day, Family Health & Fitness Day USA, National Preschool Health and Fitness Day, International Kids Yoga Day

History of Project ACES Day

The program was founded in 1989 by Len Saunders, a physical education teacher from New Jersey, who wanted to create a simple yet impactful way to get his students excited about exercise. What began as a local school event quickly gained momentum through word of mouth and the support of physical education associations. Within a few years, the initiative expanded across state lines and eventually crossed international borders, gaining recognition from major health organizations and government bodies.

The growth of Project ACES coincided with a rising global awareness of the sedentary lifestyles of modern children due to increased screen time and the reduction of physical education budgets in schools. Saunders’ vision was to provide a “no-cost” solution that any school could implement regardless of their facilities or equipment. Over the decades, the event has seen participation from millions of students simultaneously, earning praise from presidents, athletes, and medical professionals for its ability to unite the world through a common goal of health and wellness.

Why is Project ACES Day important?

This day is significant because it addresses the global health crisis of childhood physical inactivity in a way that is positive and celebratory rather than clinical or punitive. By making exercise a massive, shared event, it removes the “chore” aspect of working out and replaces it with a sense of camaraderie and fun. It provides physical education teachers with a high-profile platform to demonstrate the value of their programs to school boards and the wider community, advocating for the continued inclusion of fitness in the standard curriculum.

Moreover, Project ACES Day reinforces the idea that small, consistent efforts can lead to significant long-term health benefits. Just 15 to 45 minutes of synchronized movement can boost a student’s mood, improve their focus in the classroom, and reduce the symptoms of anxiety. The day also serves as a pedagogical tool, allowing teachers to integrate lessons on geography, time zones, and global citizenship as students realize they are exercising alongside peers in completely different parts of the world.

• It creates a global sense of community through synchronized physical activity.
• The event raises awareness about the long-term benefits of childhood fitness.
• It provides a platform to advocate for sustained physical education in schools.
• Participation encourages students to view exercise as an enjoyable social activity.
• It helps combat sedentary habits by introducing fun, accessible movement routines.

How to Celebrate Project ACES Day

To celebrate, schools typically gather their entire student body on a playground, gymnasium, or local park at 10:00 AM. The activity can range from a simple walking program or jumping jacks to more elaborate choreographed dance routines or aerobic circuits led by student leaders or local fitness experts. The key is that everyone moves at the same time, regardless of their specific choice of activity. Schools are encouraged to invite local media, professional athletes, or community leaders to participate, further emphasizing the importance of the event to the students.

At home, parents can participate by joining their children in a quick morning workout or by organizing a neighborhood “ACES” walk after school. Many participants share their photos and videos on social media using official hashtags to connect with other schools worldwide. Educators often follow the physical activity with classroom discussions about how the body feels after exercise and the importance of balanced nutrition.

• Organize a school-wide assembly for a 15-minute synchronized exercise routine.
• Invite local fitness instructors to lead a fun, age-appropriate workout session.
• Create a “fitness playlist” of upbeat music to motivate students during the event.
• Use the day to teach a lesson on the human heart and the benefits of cardio.
• Share your school’s participation on social media to inspire other communities.

By prioritizing movement in the school day, Project ACES highlights the critical link between physical health and academic performance, demonstrating that exercise is not just a recreational activity but a fundamental component of a child’s developmental well-being. It serves as a powerful visual reminder of the collective commitment required from schools and communities to foster lifelong healthy habits in younger generations. Participation is inclusive of all ability levels, emphasizing that fitness should be accessible, enjoyable, and a shared social experience for every student regardless of their athletic background.

Project ACES Day Dates Table

1. https://lensaunders.com/aces/aces.html[↩]