Various systems and methods for improving map and navigation data are described herein. An electronic navigation system for improving map and navigation data comprises a database access module to access a database of physiological information to obtain a biometric value, the biometric value associated with a location and a time; a processing module to determine whether the biometric value violates a threshold; and a display module to display a notification on a map when the threshold is violated, the map including an area around the location associated with the biometric value, and the notification displayed proximate to the location associated with the biometric value.