Ashtanga Yoga Center Barcelona. Ashtanga Yoga Shala is a centre that specializes solely in the teaching of Ashtanga yoga in the tradition of Sri K. Pattabhi Jois with authorized teachers. Ashtanga is yoga in movement and stretches the whole body in depth, balancing and purifying the physical body and improving mental concentration. It calms the nervous system and brings an immense sense of physical and mental well-being.