e effort, greater the benefits) ??? ??? ??? how active should i be 30 minutes of moderate-vigorous PA 5 days/week OR vigorous cardio for 20 mins 3x/week, 8-10 strength training twice/week ??? ??? ??? moderate physical activity about 70-80% of max heart rate, breathing hard but can still talk, best defined as activity that is 3-6 METS ??? ??? ??? vigorous physical activity anything over moderate, b