Inversions are most widely classified as an asana where the head is below the heart. Examples of inversions include:
- head stands;
- shoulder stands;
- hand stands; and
- forearm stands
However, more simple asanas are also considered inversions, such as Wheel Pose (urdhva Dhanurasana) and Downward Facing Dog (Adho Mukha Svanasana).
Inversions not only feel good, but they are also good for you, if done appropriately. Some of many physiological benefits of inversions include:
- An improvement in mood;
- Easing of muscle tension; and
- Improved digestion
There was a wonderful article written about the benefits of doing inversions that I recommend reading from Yoga Journal found here http://www.yogajournal.com/article/practice-section/everybody-upside-down/
In my own practice, I have noticed that every time I have mastered a new inversion, the sense of accomplishment is great. Of course, everyone’s body is different and there may be some inversions that you are physically limited in performing. That is why it is important to listen to your body and do what is physically healthy for you. The good thing is that there are so many modifications of inversions that you can perform that allow you to still experience the benefits of inverting. They are worth looking into.