Back to the messy heart beat ...
Well after 10 days of a clean sinus rhythm I'm back to the messy one and the watch is struggling with misinformation on my 'stress levels'. Perhaps the only thing that is stressing me is the way none of these 'Artificial Intelligence' tools have no intelligence at all. The main problem is that the Samsung tools have no idea of other reasons for a high HRV and try to fix a high one to what it has been 'trained on'. I'm still not experiencing any problem symptoms…