My yoga instructor is Olivia Sheldon who teaches Positive Energy Yoga. I have been practicing yoga with her for about 7 years and she is fantastic! She mirrors the movements of the class, comes around to do adjustments, and has a wonderful sense of humor. Don't believe me? Check out the reviews on Yelp.  :)

Positive Energy Yoga

3223 Duke Street, 2nd Floor
Alexandria, VA 22314
(703) 582-3699

This is what the Mayo Clinic has to say about some of the benefits of yoga:

The potential health benefits of yoga are numerous and may include:

• Stress reduction. With its quiet, precise movements, yoga draws your focus away from your busy, chaotic day and toward calm as you move your body through poses that require balance and concentration.
• Increased fitness. As you learn and refine new poses, you may enjoy improved balance, flexibility, range of motion and strength. And this means you're less likely to injure yourself in other physical endeavors or in your daily activities.
• Management of chronic health conditions. Yoga might help with a variety of health conditions, such as cancer, depression, pain, anxiety and insomnia, by helping with sleep problems, fatigue and mood. Yoga also can help reduce heart rate and blood pressure.
• Weight loss. If you're overweight or have binge-eating disorder, yoga may help you make the healthy lifestyle changes necessary to gain control of your eating and drop those extra pounds.

While you shouldn't expect yoga to cure you or offer 100 percent relief, it can help some health conditions when combined with standard treatment. And if you already enjoy good health, yoga can be an enjoyable supplement to your regular fitness routine.