This practical handbook gives you the basics of WHY and HOW to use the Perrin Technique to underpin recovery from Long-Covid and restore healthy lymphatic drainage from the brain following Covid-19 infection or vaccination. Bringing together the post-pandemic context, the background science and Dr Perrin''s clinical findings, this new book is a clear, concise account of the structural and neuro-immunological problems that can lead to the symptoms of Long-Covid and is ideal for patients wishing to gain an understanding of their complex condition as well as for health practitioners and physical therapists wishing to understand the basics. Through the Looking Glass takes readers through the confusion around what Long-Covid really is and out the other side where it is possible to have a much clearer view of what treatment will work and why.