Yeah, monitoring your heart rate and breathing is a short step away from cataloging your sex life, or at least the part of it that takes place in bed, which is where most people like to get it on.
I am not that enthused about this whole 'quantified self' movement; it strikes me as Taylorism applied to leisure activities and now sleep. I have no confidence that the data will remain fully under user control; rather, incentives will appear that encourage people to grant non-revocable access for consumerist 'rewards,' which in turn will be employed to create consumer anxiety about suboptimal life patterns, which can be assuaged for the low, low cost of only $x/month.
http://en.wikipedia.org/wiki/Scientific_management
I like technology a lot, but I don't care for the idea of being cocooned by it 24/7.
Then I read that the bed will be listening to my wife and me. That's really creepy. Together with all these 'AIs are going to kill us all articles' it reminds me of the Amazon Echo thread [1]... it carefully studies your sleeping habits, switches off the lights, locks your doors, and waits patiently for you to fall asleep...: http://youtubedoubler.com/eqOJ
[1] https://news.ycombinator.com/item?id=8569219