Today, there is a growing emphasis on looking good, feeling good and living longer.

Increasingly, scientific evidence tells us that one of the keys to achieving these ideals is fitness and exercise. But if you spend your days at a sedentary job and pass your evenings as a "couch potato," it may require some determination and commitment to make regular activity a part of your daily routine.

Equal Opportunity Benefits

Exercise is not just for Olympic hopefuls or supermodels. In fact, you're never too unfit, too young or too old to get started. Regardless of your age, gender or role in life, you can benefit from regular physical activity. If you're committed, exercise in combination with a sensible diet can help provide an overall sense of well-being and can even help prevent chronic illness, disability and premature death. Some of the benefits of increased activity are:

Mind Over Immobility

Getting moving is a challenge because today physical activity is less a part of our daily lives. There are fewer jobs that require physical exertion. We've become a mechanically mobile society, relying on machines rather than muscle to get around. In addition, we've become a nation of observers with more people (including children) spending their leisure time pursuing just that - leisure. Consequently, statistics show that obesity and the problems that come with it (high blood pressure, diabetes, stroke, etc.) are on the rise. But statistics also show that preventive medicine pays off, so don't wait until your doctor gives you an ultimatum. Take the initiative to get active now.

The Fitness Formula

If you're interested in improving your overall conditioning, health experts recommend that you should get at least 30 minutes of moderately intense physical activity on all or most days of the week. Examples of moderate activity include brisk walking, cycling, swimming or doing home repairs or yard work. If you can't get in 30 minutes all at once, aim for shorter bouts of activity (at least 10 minutes) that add up to a half hour per day.

Instead of thinking in terms of a specific exercise program, work toward permanently changing your lifestyle to incorporate more activity. Don't forget that muscles used in any activity, any time of day, contribute to fitness. Try working in a little more movement with these extras:

All-Season Exercise

If you're ready to move up to more vigorous activity, remember that "no pain, no gain" isn't exactly true. The best-laid plans of many a fitness program have been ruined by too much enthusiasm on the first day and sore muscles on the second. A goal is an end point, not a beginning, so work toward your goal gradually. Once you're in better shape, you can gradually increase your time or distance or change to a more vigorous activity.

If you have cardiovascular disease, you should check with your physician before undertaking more vigorous activity. Likewise, if you're a man over 40 or a woman over 50 with risk factors such as smoking, high blood pressure, high cholesterol or obesity, seek your doctor's advice.

The key to a lifetime of fitness is consistency. Here are some tips to help you make exercise a habit.

It's a good idea to choose more than one type of exercise to give your body a thorough workout and to prevent boredom.

No More Excuses

You can probably come up with plenty of excuses for why you're not more active. You're too young, you're too old, you're too busy, you're too tired or you're in pretty good shape - for your age. But with few exceptions, these excuses are pretty flimsy. There are activities for the young and old and for those with little time. So the next time you think about getting fit, don't ask "Who has time?" Instead, ask yourself "Who doesn't want to feel better?"