Most fitness research has found that aerobic exercise should be done at least three times a week to consistently improve a person’s fitness level. However, the real objective in determining how often you exercise is to form the habit of exercise, and it is often difficult for human beings to form habits on a three-day-a-week schedule. Monday, Wednesday, and Friday can soon become Thursday, Saturday, and “I’ll make it up next week.” Daily activities, or “work week” schedules, are easier to adhere to for many people.
So the minimum is three days per week. Making fitness activities a part of every day, like tooth-brushing and reading the paper, is the easiest in the long run.
