1. Song of the Spine Preset is most effective is the one you find that works for you, the one that works for me or anyone else may not work for you, if the body doesn’t need the frequency, it will not respond to it, running it one day may not be enough to notice anything also.
2. 432 is considered harmonious. 440 is less so. There’s a lot of discussion about it & you might want to Google that.
3. In musical terms, 440hz agitates the body at a cellular level, while 432hz is considered, as stated already, more harmonious. Which only makes me wonder why 440 would be included.
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