I started working out in 2018 and I have used a Garmin 935 during workouts. Ever since my watch detects a 189bpm max HR from all workouts I’ve done. The latest ramp test, my HR shoot up to 198bpm and my 935 now set my new HR max fo 196bpm and this messes up my training HR zones.
I’ve used the same HR monitor for months, (polar oh1+), same location on the arm. What does this mean? My body really has a higher HR max? Glitch in the sensors? Should I adapt to the newer HR zones?