The Volkshochschule in Ravensberger park is offering a Yoga class by Anamaria Diaz Rodrigo in Spanish on Friday mornings, starting next week on February 14th. The fee is 42 Euros/21 Euros reduced rate  for 8 sessions, course number is 3803K8. Unfortunately, it is not visible in the online programm, but I spotted it on page 88 of the printed version.

Thanks for the tip PollyEster!