You're under stress, but you have to be in control all day long. Over time, that can lead to poor eating habits, the production of stress hormones and cardiac risk factors. The good news is you can reverse these risk factors non-pharmacologically and develop some habits for a lifetime that complement conventional diet and exercise. Yoga helps you to relearn that natural state that your body and mind want to be in: relaxation.

Yoga is the most prominent form of the burgeoning mind-body health movement, which includes tai chi, qigong and other meditative forms of exercise. Mind-body fitness, which derives from Eastern philosophies and religions, improves physical and emotional well-being.

The overall benefits of mind-body exercise are documented in an increasing number of scientific studies. They include everything from reducing cardiac risk factors to enhancing mood.

The kinder, gentler movements typical of yoga improve flexibility, strength and muscle tone and can be more youth-promoting than the wear-and-tear of daily aerobics, weights and running alone.

In fact, practicing yoga can impact every part of your existence. Most modern Western practitioners, for example, focus on the physical asanas, or positions. However, many others utilize yoga as a path to bliss and live their lives in its all-encompassing embrace.

Considering yoga's lofty goals, it's delightfully simple and can be done anywhere, anytime. Taken to its extreme, yoga encompasses everything from a moral code and dietary practices to deep meditation. Most commonly, though, it's a combination of asanas, meditation and pranayama (breathing exercises).

Entire books have been written on yoga breathing. Deep breathing is both calming and energizing. The energy you feel from a few minutes of careful breathing is not nervous or hyper, but that calm, steady energy we all need.

Try this 5-minute Breath Break to release your stress and pump up your energy. (Read through the instructions several times before you try the practice.)

1. Sit with your spine as straight as possible. Use a chair if necessary but don't slump into it. Feet flat on the floor with knees directly over the center of your feet. Use a book or cushion under your feet if they do not rest comfortably on the floor. Hands are on the tops of your legs.

2. Close your eyes gently and let them rest behind closed lids.

3. Think about your ribs, at the front, back, and at the sides of your body. Your lungs are behind those ribs.

4. Now, slowly breathe in, filling your lungs up from the bottom. Picture your ribs expanding out and up. Now, breathe out, slowly, with your lungs emptying from top to bottom and your ribs gently contracting back down and in. Don't push the breath out.

5. When you first do this, do it for two or three minutes. As you become more practiced, do it for 5 or 10 minutes. When you first begin, set aside a time once per day to do this. As you become more accustomed to it and realize how good it makes you feel, you'll want to practice it throughout your day at various times.