Ensuring health and well-being during this pandemic is essential according to the United Nations Sustainable Development Goals . Physical exercise has an important role in the preservation of the immune system, which is vital to prevent infections . To promote physical exercise and maintain a healthy status, recent studies have suggested general exercise routines to be implemented during the quarantine period . However, to improve the health-related physical fitness components, any specific prescription should include intensity, volume, duration, and mode . Controversy persists about which is the best intensity of physical activity, while performing exercise at a moderate intensity could bring important benefits to asymptomatic people. High intensity or unaccustomed exercise should be restricted for older people, and for people of all ages with chronic diseases or compromised immune system, obesity, or upper respiratory tract infection with limited symptoms. Besides, physical activity guidelines should be particular to each population group, giving special consideration to those vulnerable to COVID-19 who are much more likely to suffer more self-isolation . Therefore, the present study is to provide specific physical activity recommendations for different populations during this pandemic.