I've got a Tom tom running watch and check my resting heart rate now and then. It's gone from an average of 54 to 49 and hit a new low of 44 last night (this is over 4 months since I got it).
Back story is that I'm 46, relatively fit but not THAT fit and am hypothyroid - but this is controlled and I had last blood test less than 2 months ago and it was fine.
I'm slightly concerned that it may be a sign of underlying heart prob but nor do I want to make a.fuss over nothing (particularly as I wouldn't even have known I had an issue if I didn't have a hrm).
Any ideas?