Evidence: Established — This is research-literacy guidance grounded in standard epidemiological and study-design principles, not a contested health claim.
Measurement & Habits
What is worth tracking, what is noise, and how to build habits that survive real life.
Guides
Evidence: Established — Sleep, physical activity, diet quality, and social connection are supported by decades of consistent human evidence and public-health consensus.
The Sonic Vitality Guide to Healthy-Aging Foundations
Practical System Evidence: Established — Standard seed testing uses controlled moisture, temperature, time, and a counted sample to estimate germination percentage.
A Simple Germination Test for Older Seeds
What remains uncertain
Every topic on this site has open questions — that's how science
works. Individual guides call out specific uncertainties, and our
methodology explains how we grade what we
publish.