You have to understand that humanity is going two ways nowApple, did ANYONE ask for that ? More sensors to measure us. Privacy invasion. Only used Apple in the past and this is a thing of the past.
One way is the machine-augmented human
The other way is the natural/organic human
Ironically the natural/organic human is the higher technology - "science" (a word misused these days for propaganda, but which also still refers to real actual science) cannot create life, only life can create life, which is laymans proof that oh, the body can do some stuff we have no idea how it works and are not even remotely close to understanding how it works.
We often think we know how the body works - snake oil salesmen particularly are interested in promoting this world view so they can sell you things - but in actuality we have no clue. We know about as much about how our body operates as an ant knows about how the space shuttle operates.
Apple is squarely with the machine augmented human idea, so expect more "health" tech from them
I had an Apple watch measuring my heart rate ... then I had a bunch of useless data... what do I do with that? I know how I feel; I know if I am healthy; I know when I need to rest; I know how to keep myself healthy (eat healthy food and moderate exercise, most importantly meditate since most disease comes from stress and wrong ideas about health - it's not rocket science).
My body is not just measuring my heart rate, it knows about 1 billion more data points than that watch. Once the Apple watch has 1 billion data points, and the AI to go with it to interpret those data points - then it can be useful to me.
Right now it has like 10 data points, so it's 8 orders of magnitudes away from becoming useful.