How Much Exercise Is Enough?

Before you make a decision on how much exercise you need, you should have a good idea of your exercise goal or goals.  Are you exercising for physical fitness, weight control, or as a way of keeping your stress levels low?

Exercise: How Much You Need

“How much exercise is enough/or what?” asks David Bassett, Jr., PhD, a professor in the departments of exercise, sport, and leisure studies at the University of Tennessee in Knoxville.

For general health benefits, a routine of daily walking may be sufficient, says Susan Joy, MD, director of the Women’s Sports Health Program at the Cleveland Clinic.

If your goal is more specific -say, to lower your blood pressure, improve your cardiovascular fitness or lose weight -you’ll need either more exercise or a higher intensity of exercise.  So figure your goals first, and then determine what type of exercise will help you need them and how much of that particular exercise you’ll need to do.

Current Exercise Guidelines for Americans

According to the US Centers for Disease Control and Prevention, everyone needs two types of physical activity each week: aerobics and muscle-strengthening activities.  Aerobic activity involves repetitive use of the large muscles to temporarily increase heart rate and respiration.  When repeated regularly, aerobic activity improves cardio-respiratory fitness. Running, brisk walking, swimming, and cycling are all forms of aerobic activity.

Muscle-strengthening activities are designed to work one or more muscle groups.  All of the major muscle groups -legs, hips, back, abdomen, chest, shoulders, and arms –should be worked on two or more days each week. Lifting weights, working with resistance bands, and doing pushups are all forms of muscle-strengthening activities.

Adults need at least 150 minutes of moderate intensity physical activity each week, in addition to muscle-strengthening activities.  If activity is more vigorous in intensity, 75 minutes may be enough.  For even greater health benefits, though, more activity is better: 300 minutes of moderate intensity activity or 150 minutes of vigorous aerobic and 150 minutes of muscle-strengthening combined.

It’s best to be active throughout the week, rather than concentration of all your physical activity in one day.  That means 30 to 60 minutes of exercise, five days a week. You can break it up into even smaller chunks: three brief periods of physical activity a day, for example.  In order for it to be effective in improving health and fitness, you need to be sure to sustain the activity for at least 10 minutes at a time.

Exercise: What You Need to Lose or Maintain Weight

A combination of dieting and exercise is more effective for weight loss than dieting alone. To lose weight, 60 minutes of moderate to vigorous intensity physical activity on most days is recommended.  Physical activity is also important to maintain weight loss.  Moderate intensity physical activity for 60 to 90 minutes on most days will help maintain weight loss.  Of course, a healthy, low-calorie diet is also important in both losing and maintaining weight.  The amount of exercise your need for weight loss or weight control depends on what you eat, as well as which type of exercise you choose.

Know what you want to achieve and then you can answer the question: How much exercise is enough?

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