The World Health Organization (WHO) recognizes that health and well-being are essential
to achieving the United Nations (UN) Development Agenda 2030, which includes the goal of
empowering people to adopt active lifestyles while protecting the planet’s health. This article aims at
exploring how exercise performed in different natural settings can contribute to improving health
and to a more sustainable world. We define “exercise” as a form of physical activity undertaken to
increase fitness, health, and well-being, and argue for the importance of “green” and “blue” exercise
as forms of physical activity that are associated with the protection and sustainability of natural
settings and the promotion of planetary health. Blue and green exercise should become a focus
of public policies, especially when outdoor activities are being identified as fundamental for the
promotion of mental, physical, social, and spiritual health. The current paper intends to raise the
awareness of political decision-makers and professionals in education, environment, and heath
sectors for the potential of green and blue exercise as specific exercise practices that are healthy, joyful, and environmentally friendly