Many brands have built nap tracking functionality into their wearables. For some reason Garmin devices only have the ability to track on sleep session per day. This is unsatisfactory - particularly now that sleep stats play such a important function in the newly added Training Readiness score. For those that like to supplement a overnight sleep session with a long afternoon nap, the Training Readiness is consistently underestimating their actual ability to train. Please Garmin add the ability to track naps - even if it is just a simple timer (without sleep phases).