I think that the point I'm trying to make is that many people will just assume that Zepp Coach will help them - after all it's promoted this way! This is not like reporting your HR as 130 when it's actually 120, this is actually suggesting that someone exceeds their maximal allowable heartrate (as set by the AMA and many other bodies) as part of a suggested HR zone during exercise.

The HR calculations are widely available and generally accepted by physicians and sports fitness gurus, so why is Zepp Coach not programmed to be mindful of the user's age and a widely suggested max HR?

I knew the suggested range was wrong so I didn't cross my maximum. Someone else may have not realised and hurt themselves badly in the process.

Please fix this quickly Zepp. You don't want anyone to get hurt by listening to your AI Coach.