Professional coaches do this. QS projects have found interventions that help these like creatine for cognitive functioning. For examples see https://wiki.openhumans.org/wiki/List_of_Interesting_Self-Tracking_Results.
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Professional coaches use health tracking. QS projects have found interventions that help these like creatine for cognitive functioning. For examples see https://wiki.openhumans.org/wiki/List_of_Interesting_Self-Tracking_Results.
==== Contribute your data to medical research. ====
==== Contribute your data to medical research. ====