The benefits of yoga are not only physical but also mental. Stretching the body helps you be flexible enough to get into new positions, which might give you confidence to try new things. Additionally, the mental clarity that results from a regular yoga practice can help you feel happier, less stressed and increase your self-esteem.
* BONUS *
The most important element of yoga that can help improve your sex life is the ability to access the light within. When you can see the Divine light within yourself and your partner, you can access higher levels of intimacy, trust and enjoyment of sex (and life overall).
As you take advantage of these benefits of yoga, remember to be safe, make eye contact and honor the wisdom of the teacher within.