How To Do Heart Rate Based Cardio In Groups For Best Results ------------ At Vigor Ground we use heart rate and HRV recovery based conditioning so it's individualized to the client, EVEN if they're in a group setting. I share and show a way that we do this in groups with a live heart rate monitor. Although I wanted to show myself getting in the red zone, it would have took me some warm up sets (which we do quite a bit of in our training), but ended up doing mid blue-green intervals, which is als