Final answer:
The minimum initial goal for adult physical activity is 150 minutes of moderate-intensity activity per week.
Step-by-step explanation:
The minimum initial physical activity goal for adults is 150 minutes per week of moderate-intensity physical activity. According to the 2018 Physical Activity Guidelines for Americans issued by the Department of Health and Human Services (HHS), adults should aim for at least 150 minutes to 300 minutes (2 hours and 30 minutes to 5 hours) per week of moderate-intensity aerobic activity for substantial health benefits. This level of activity helps lower the risk of many diseases and improves overall health, including increasing cardiovascular and muscular fitness, bone density, cognitive function, and assisting with weight management.