I've just been looking up normal resting heart rates. Various resources all say a resting HR of between 60 and 100 is normal. However, 100 seems high to me (I'm not a medical professional!) if you are active, not overweight and have no other health issues.

I had an ablation 3 weeks ago, and my resting HR has risen, or at least is unstable. Sitting on the couch the other night, when I would expect a HR of around 60, it was stuck at 109! However, I'm trying to be patient, as this is the "blanking" period after an ablation when the heart is adjusting. I do try breathing and relaxation exercises to bring it down, but that isn't always effective.