NOVELTY - The method involves operating (1822) the heart rate monitor in a first mode while also operating in a second mode configured to detect near proximity of the wearable fitness monitoring device to a user's skin. The first mode is configured to determine one or more characteristics of a user's heartbeat waveform when the wearable fitness monitoring device is in near proximity to the user. The information collected in the second mode determining the heart rate monitor is not proximate to the user's skin and ending operating the heart rate monitor in the first mode.    USE - Method for operating heart rate monitor of wearable fitness monitoring device (claimed) inserted into a wearable case e.g. wristband case, belt-clip case, pendant case and attached to piece of exercise equipment such as bicycle to?inform users about heart failures e.g. coronary heart disease, cerebrovascular disease and peripheral vascular disease.    ADVANTAGE - The one or more light sources and light detectors can be arranged in an array or pattern that enhances or optimizes the signal-to-noise ratio and/or serves to reduce or minimize power consumption by the light sources and light detectors. Low light loss is facilitated and hence the signal-to-noise-ratio of the photo detector is improved and/or facilitating reduced power consumption of the light sources and/or light detectors. The improved local pressure to the user's skin is provided that increases the quality of the cardiac signal of interest. The user is provided with an indication of the photoplethysmographic signal which can be used to estimate various heart metrics that can enable the user to optimize the position and pressure with which they are wearing the biometric monitoring device. The amount of time required for the user is determined to prepare for the meeting based on the user's current location. The weight lifting apparatus can automatically lift the weight or prevent the weight from being lowered.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a wearable fitness monitoring device.    DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart illustrating a method for operating a wearable fitness monitoring device having a heart rate monitor starting with concurrent operation of a first mode for detecting heart signals and a second mode for detecting an unworn state.    Step for operating the heart rate monitor (1822)    Step for stopping first mode (1826)    Step for performing motion detection (1828)    Step for operating in a worn detection mode (1832)