I did see a cardiologist after COVID-19, he did prescribe some medicine to "calm my heart down a bit", I don't meet actual criteria for tachycardia and he agree

I did see a cardiologist after COVID-19, he did prescribe some medicine to "calm my heart down a bit", I don't meet actual criteria for tachycardia and he agree in the end that I can postpone medicine if I start any aerobic exercise -- which I still didn't, except for VR games, which can be really intense, but alas, I don't have the time for or discipline.