Multi-style yoga consists of multiple styles of Ashtanga Vinyasa Flow, Yin Yoga, Hatha Yoga, Vinyasa Yoga or Yoga with props. Trainees go through the training session for 19 to 20 days for all the requisite Yoga asana. To become an expert one should focus on maximum two styles during a training session. More than two styles might help you to get all the information of different yoga asanas, but expertise will be far.