Here are some follow up resources from Session 5:
Here are some other resources you may be interested in for exploring this territory of experiencing the internal space of your body (and the experience of space, more generally). These folks have been resources and teachers for me. Each has a different feel. Some foreground the scientific, some foreground the more spiritual aspects.
Each of these people have guided audio exercises/meditations you can purchase.
Please be kind, patient and gentle with yourselves as you practice!