Search for all correlations greater than a settable value (e.g., .7) for a settable duration (i.e., week, month, year). This would be a valuable and unique feature easily finding health relationships that NO other iOS app has. An example, I take a heart medication whose efficacy is impacted by diet, sleep, etc. It would be valuable to easily find what is impacting my HRV (which is related to my arrhythmia).