I've booked an appointment with my GP as I often have episodes where my heart rate is above 100 when sitting down. Usually around 115 bpm or less but above 100.
When I have an anxiety attack it can go over 120 bpm. I take Clozapine and think that might be the reason why.
My Apple watch warns me when it goes above 120 bpm when sitting down. I'm hoping the GP will prescribe something to lower my heart rate.