Patent Document ID: 20160026856
Application ID: 14871822
Patent Flag: 0

Claim One:
1. A system for identifying a performance period, comprising: a pair of earphones comprising: speakers; a processor; and a heartrate sensor electrically coupled to the processor, wherein the processor is configured to process electronic input signals from the heartrate sensor; and a non-transitory computer-readable medium operatively coupled to at least one of one or more processors and having instructions stored thereon that, when executed by at least one of the one or more processors, cause the system to: identify the user's progression through a plurality of fitness cycles, each of the plurality of fitness cycles encompassing a period from the beginning of a stimulus through recovery from the stimulus, wherein identifying the user's progression through a plurality of fitness cycles is based in part on signals generated by the heartrate sensor; and predict optimal performance periods based on the plurality of fitness cycles.