Hiiii haven’t been on here for a while but now Iv got a gripe and I don’t want to rush off to doctors crying about it just yet. So I’m a smoker about 14-18 per day. It’s a disgusting habit I know and at odds with my anxiety I keep trying to quit and all I can say is I will get there in the end. However something is troubling me. So for years I have suffered on and off with palpitations quite bad ones at that. Had a terrible night episode when my son was 12 days old 4 years ago where my heart rate was jumping from 38- 100 an ambulance got called and the ecg detected a very irregular heart beat spent a day or two in hospital where it eventually righted itself they had no diagnosis for it. Iv come to the conclusion it was maybe hormones and my heart shrinking back to normal size ? Anyway had a monitor that picked up several ventricular eptopic beats and sinus arrhythmia whatever that is (I was assured it was fine) and had an echo that said my heart was structurally normal... can that change in 4 years ? so to come back to present day my concern is that my resting heart beat seems to sink to 50-58 bpm first thing in morning. However I have just gone for a walk and it shot up to 135 bpm and I was so out of breath and sweating. Now to my understanding smokers should have a high resting heart rate and their exercise heart rate capacity should be lower than a smoker. Why is mine the other way round. For clarity I’m very physically unfit as I say I smoke quite a lot, I’m 5’3 I weight 10 stone 6 which puts me in the overweight side of things by about half a stone. I used to be fairly active but I acquired a driving license 3 years ago and haven’t walked since 😂 dreadful I know but I have zero motivation and energy. My son is autistic and is a dreadful sleeper also constantly seeking sensory input so climbs everywhere and puts random objects in his mouth all day. I’m drained with it some days. Now can anyone slap any clarity or advice into me or similar experiences ?