Final answer:
The Australian physical activity guidelines advise adults to engage in 150 to 300 minutes of moderate-intensity, or 75 to 150 minutes of vigorous-intensity physical activity each week, plus muscle-strengthening activities on 2 or more days per week.
Step-by-step explanation:
The Australian physical activity guidelines recommend that adults should aim for 150 to 300 minutes of moderate-intensity physical activity per week. Alternatively, adults may engage in 75 to 150 minutes of vigorous-intensity physical activity per week. For muscle-strengthening benefits, the guidelines also suggest adults engage in activities that involve all major muscle groups on at least 2 days per week. Moderate-intensity activities are defined as those where you can talk but not sing, and vigorous activities are defined as those where you cannot say more than a few words without pausing for breath. These guidelines are designed to help improve overall health and reduce the risk of chronic diseases associated with physical inactivity.