Here is a list of 2 yoga centers and ashrams in Bihar.
Bihar School of Yoga
Location:
Munger,
Bihar,
North India
Styles:
hatha, satyananda, integral, tantra, children
Courses:
retreats and courses, teacher training, private teachers
Satyanand Math
"Yoga will become the culture of tomorrow"
Discounts: 1 free class
Location:
Gopalganj,
Bihar,
North India
Styles:
ashtanga, sivananda, dynamic, children, bhakti
Courses:
retreats and courses, teacher training, classes, private teachers, office