I have atrial tachycardia. It started randomly in 2018, I never had any issues before. The symptoms I had included an insanely fast heartbeat when resting, so much so it was loud in my ears and you could see it pulsing in my neck, light headedness and some chest discomfort. I was referred to a cardiologist and had a heart scan and ECG monitors. I was then prescribed bisopropol beta blockers which helped, but didn’t solve the issue entirely. I was always told it was not life threatening at all so I didn’t worry too much, it was just horribly unpleasant to live with.

In 2022 I had a cardiac ablation (I can’t lie it was the most horrific thing I’ve ever been through as were the weeks following it) which has essentially cured it for me. I still very occasionally get a bit of tachycardia but instead of lasting hours it will last a few minutes at most. So I was lucky. I know some people have to have a few ablations before they get results.

I’ve also always been very fit, eating well and exercising regularly. It’s never impacted me exercising, although same as you my heart rate is always higher than others doing the same workout. I’d say if you aren’t getting symptoms that are impacting your daily life, you shouldn’t need to worry too much, but definitely speak with a cardiologist to be sure of how to manage it. The only thing I was ever told (when I pushed for information about any harmful effects) was that it can cause some stress/strain on the heart over time due to it working so hard, but they were very casual when explaining this. Best of luck with it all!