Hello recently i was having higher pulse rates which were maximum 150 bpm while moving around normally . for which i visited a cardiologist and done ECG ECHO AND TMT and all test were normal within ranges . now the problem is even a slight changing of position while sitting or lying down increases my heart rate from 90 to 105 110 sometimes. also when i brisk walk its goes upto 160 bpm. and sometimes its constantly at 90 while at rest . having anxiety disorder too . please help me out or guide me what i can do and is it a condition of its normal because according to my smartwatch today while riding motorcycle my heart rate was 160 .