Cardio-respiratory, or aerobic, activity is recommended on a daily basis. In order to improve your level of cardio fitness, your workouts should include a minimum of 20-30 minutes of aerobic activity at least three to four times per week.
Aerobic activities are activities in which you are in constant motion and can sustain an elevated heart rate over a period of time. They include, but are not limited to, running, walking, swimming, dance, cross-country skiing, and several kinds of sports. There are so many different types of aerobic activities that if you feel yourself getting in a “rut,” spice things up by trying something new!