BOOK LINKS
1. journals.plos.org/plosone/article?id=10.1371/journal.pone.0051216
2. https://www.youtube.com/watch?v=-XGds2GAvGQ
3. https://www.youtube.com/watch?v=GtiSCBXbHAg
4. https://www.youtube.com/watch?v=vN-n3Q9d6Q8&t=23
5. https://www.youtube.com/watch?v=IU13sdrLQ-M
6. https://www.youtube.com/watch?v=b92TXSq5PIo
7. https://www.youtube.com/watch?v=DrczKvdv9Ow
8. https://www.healingsounds.com/product/the-humming-effect-book/
9. https://www.youtube.com/watch?v=sIS8Qbj15TU
10. https://www.youtube.com/watch?v=8l30VoukkC0
11. https://www.youtube.com/watch?v=tFnxLyzosvs
12. https://www.heartmath.org/resources/heartmath-tools/quick-coherence-technique-for-adults/