Real basic simple exercises are all you need. You can make yoga as complicated you as you wish, so many possible asanas and postures and thousands of kriyas. But in reality you need to establish a few that work for your body and do those regularly. Tune in to your body and do them when you need to do them, when you feel your body becoming out of tune with your spiritual self. When you make that connection with your inner lite it’s relatively easy to always go back to it, as long as you have that practice that you continually do.