Great classes for yoga at home

I really like how the app is structured and there are plenty of classes to choose from for all levels. The guidance works quite well and the written explanations for single poses are quite detailed, including variations for beginners.

However, some classes alternate intense backbends with intense forward bends multiple times, putting a lot of stress on the spine. I was under the impression that this practise was discouraged for health reasons?

Lars3184 about Yoga Studio: Classes and Poses, v3.1.3