I want to be able to only press start and then let my phone be workout touching it again until the whole workout is complete.
Warmup, training, stretch. Done.
I would also like an option to switch all the amount (12x) exercises to time based so that I can have zero interaction with my phone.
And finally, I would like it all logged as one exercise in apple health.
Iām using whoop which receives 3 exercises per day.
Also whoop user here. 
But I really do not have a clue what you mean with this.
This is a big deal for me too. I want to time box the whole workout and not interact with my phone
I am a bit confuse as well to understand the request.
Can you please describe a little more by taking an example of workout?
on my side workout are based on reps to be performed so I have to interact with my phone to move to the next one. not sure to understand how can we do w/o any interaction