I lived in Bern for many many years before moving to Zurich. I think Bern is a beautiful place. However, it might be a bit difficult to make friends there due to the Bernese people being very reserved. I especially notice this after having moved to Zurich where I have gained much more friends within 4 years than in Bern during 15 years. Maybe you will meet people through yoga. If not, I recommend you to maybe enroll in a German class or something like that where you would get a chance of gaining new friends.
Good luck with your move and I hope you will enjoy Bern.