The yoga style which I worked at, and made the most time for to improve myself is Yin Yoga.
As a hatha yoga style, Yin Yoga is practiced to balance all other “yang” yoga types, in other words all kinds of activities performed by the muscles. In order to improve their flexibility and thus strength, the muscles are kept rather passive compared to other yoga styles. Sitting or lying positions are held for 3-5 minutes with passive muscles. While yang style yoga applies more to the surface, yin yoga offers to reach deeper in the body (to the deep connective tissues).
The time passing in yin poses is similar to that in meditations. During poses I usually give talks to lead my students to a meditative state.
Yin yoga is a yoga style that everybody can practice whatever your age, physical strength or the flexibility of your body. It is highly beneficial for very active life styles as it gives the body the chance to open and soften, and release the strain without consuming too much energy. If you’d like to gain further insight about the experiences you will have in Yin Yoga classes, I recommend you to read this article.