I've found the sleep function super valuable, it let's my quantify how small changes can affect me sleep. The smart alarm is also useful (wakes you up while yo

I've found the sleep function super valuable, it let's my quantify how small changes can affect me sleep. The smart alarm is also useful (wakes you up while you are in a light sleep cycle as opposed to deeper sleep). As a runner, i've found the heart rate data useful for gaining insights.