Resting heart rate moves 10 bpm higher or lower within very short time
I have been using a fitbit over 5-6 years and my resting heart rate fluctuates between 52-62 bpm. It was moving max 2-3 bpm a day. Apple watch is using a different method and i can accept it but apple one is keep jumping higher or lower 5-10 bpm during a day. Is this normal? It looks like a random number