You can't walk across a room without huffing and puffing. Your arms get tired unpacking a bag of groceries. You're carrying more and more excess body weight. And you can't remember the last time you got any real exercise.

It is always important to talk with your doctor before starting an exercise program, particularly if you have certain health conditions.

A training log helps you organize and save information about your exercise routine so you can work toward your important goals.

You can lose weight by dieting, exercising, or a combination of both. Including exercise into your daily routine offers other benefits besides weight control.

Lack of physical activity has clearly been shown to be a risk factor for cardiovascular disease.

Although aerobic workouts like walking or running are important, they can’t take the place of strength training when it comes to building and preserving muscle.

Starting as early as your 20s and throughout your 30s, you'll naturally start to lose muscle -- and gain fat at a rate of about 2 percent per decade, especially if you have a sedentary job or lifestyle.