In my case HRV went down almost 30% before I started to have symptoms with 50% of average on the worst day. Resting heart rate went up 35% on the worst day and

In my case HRV went down almost 30% before I started to have symptoms with 50% of average on the worst day. Resting heart rate went up 35% on the worst day and respiratory rate went up 18%. But only HRV was obviously changed before I started to feel symptoms and became infectious.