It just doesn't. I use the Modular face, with the HR monitor as the large central one, and it'll say, "17 minutes ago" or "28 minutes ago". I actually tapped to update it manually, went back to the face, and it didn't even say "Right Now" it said "5 Minutes Ago" with a value that was 4BPM lower than the live sample I just took. What's up here? Some kind of fight to save battery power? The whole point of my purchase was that the watch had significant health monitors, and this behavior makes it essentially useless.