Free Book Promotion on Complimentary and Alternative Therapies for Pain

I am running a FREE Kindle Book promotion of my book Complimentary & Alternative Therapies for Pain on Amazon from 15th December - 19th December. I am planning on writing book 2 on this subject in 2019. I want to add more therapies and include different types of pain relief to book 2 but I would love you to review my book and comment on either Amazon or on my blog with any subjects or ideas you think I should include in my second book. https://amzn.to/2C8fzjv