hi Michelle, These sessions are recorded. There are 10 classes, each one is 60 min long. You will have access to all the videos forever. Inversions definitely help with mental and physical health and are an integral part of Yoga. This course takes an in-depth approach with inversions to enable practitioners to feel ready and comfortable with attempting inversions, no matter what their level is. Hope that answers your question. Feel free to reach me at yogawithpragati@gmail.com if you have any further questions.