Aerobic activity is also known as endurance activity and examples include: brisk walking, jogging, biking, dancing, and swimming. Older adults should aim for at least 150 minutes (2 hours and 30 minutes) of moderate-intensity aerobic activity each week, 75 minutes (1 hour and 15 minutes) of vigorous-intensity aerobic physical activity each week, or an equivalent combination of moderate- and vigorous-intensity aerobic activity. When chronic conditions make it hard to achieve the 150 minutes each week, older adults should be physically active as their abilities and conditions allow. Perform aerobic activity for at least 3 days a week to help avoid excessive fatigue and reduce risk of injury. It counts as long as the aerobic activity is performed at a moderate or vigorous effort for at least 10 minutes at a time. The intensity of the activity depends upon the older adult's level of fitness.