Apple Watch Ultra Heart Rate During Workout

Hi everybody,

I know all of you are frustrated about the Apple Watch not being able to read your heart rate sometimes while working out, well after about two weeks of talking everyday with Apple support we have a conclusion and it’s a scientific one.

Apple’s heart rate sensors are one of the most advanced sensors in the world for a wrist watch and they read your heart rate using the veins on your wrist.

when you begin a run you’re cold which means your veins aren’t popped out yet which makes it difficult for the every wrist workout watch to indicate what your heart rate is. When being in a lower temperature area such as running outdoors it’s likely that in the couple first minutes of the workout your heart rate won’t be read because your body is still cold therefor your veins didn’t pop yet (this happens mostly in the winter and depends on where you live) I’ve talked with friends who own Garmin’s and Suunto’s and they’re experiencing the same problem too because of cold weather.

Please be advised that every person is different then the other and some people take longer time to warm up either because they’re more in shape and running a couple minutes won’t warm them up or that’s just how your body is.

What I can advise you before you contact Apple about a problem like this is to make a run indoors where it’s hotter then your outside temperature and run on a treadmill and you’ll be able to see that the Watch reads your heart rate easily, just make sure it’s strapped on as Apple advised while working out.