Exploring Non-Exercise Activity Thermogenesis To Reach Your Exercise Goals And Live a Healthier Lifestyle. According to the CDC adults should aim to get 150 minutes of moderate physical activity per week and add muscle-strengthening activities on two or more days. This may not seem too unreasonable but according to the CDC barely 24 percent of adults over the age of 18 met the guidelines for both aerobic and muscle-strength activities in 2020. Many of us think of exercise a