What’s a normal spike in heart rate from minimum activity?

[taylormoon]

This might sound like a silly question but  I’m not very versed in this kinda stuff. I bought a Fitbit because I want to improve my fitness and watch my heart health (my Dad recently passed of a heart attack and although I’m still in my 20s I know that puts me at a higher risk so I thought best to try and get on top of things sooner rather than later). I’ve noticed my resting heart rate levels over the past few days since I bought my versa range from 69-71 which I think (?) is average. But those are the readings from when I’m asleep. If I’m just sitting on the couch like I am now writing this the reading seems to bounce from anywhere between 75-88. Just before it was on 75, I moved my arm a bit to scratch my back and checked it again and it went to 84. I am quite unfit but I don’t believe i’m that unfit or is a small spike like that normal? When I’m exercising like a brisk walk I notice it goes around 120-130. I guess i’m just wondering is a random spike like that normal for heart rate or is there something wrong with my versa? (or me lol)

[NellyG]

It sounds pretty normal to me. Then you sit quietly your heart rate drops right down, but as soon as you move even a bit the muscles need oxygen so your heart rate goes up to deliver the oxygen. If you are concerned about your heart, get it checked out by your doctor.