After 500 hour Yoga Expertise Programs Berra had the chance to work with estimated Yoga experts such as Dylan Werner, Paulie Zink, Mantak Chia, Sudakha, Sarah Powers, Tias Little and Hart Lazer. She gives expertise programs about Yin Yoga, Hatha, Vinyasa, Anatomy, Chakras and Meridians in a lot of cities in Turkey. She trained Krav Maga people in London.
She also gave Yoga sessions for a long time at the clinic “Yasasin Hayat”, which belongs to the renowned Prof. Dr. Osman Müftüoğlu.
Her personal interest in anatomy and physiology pushed her to come together with well known scientists, authors, doctors and professors from all around the world. Some of them are Dr. Robert Schleip, Prof. Carla Stecco, Dr. Georg Harrer, Dr. Jose Palomar, Dr. Stephen Sandler, Prof. Dr. Winfried Neuhuber, Dr. Paul W. Hodges. To understand fascial anatomy she attended a course led by Robert Schleip on carcasses.
She published a book called Yin Yoga with Berra Sertel.
She doesn’t classify herself to a specific Yoga style/school because she has no aversions to anyone of them. She likes to bring all her knowledge together and teach what feels better and right. If Yoga opens up to us a new way to feel free and fight our addictions, then we should be open to all knowledge, she says.