I originally bought my Fitbit to monitor my heart rate when I first started exercising as I really thought it was too fast. It just gave me confidence to run. My heart was fine. I was just very unfit.

I like my Fitbit, but I doubt the readings are accurate. I once had a lengthy appointment at the dentist, and although I was fully awake throughout, my Fitbit said I’d slept for an hour! But I use it for comparison purposes to see heart beat (at rest and exercise), sleep time, daily step count and calories burned. I take the readings with a pinch of salt.