HR Spikes too Easily


I am in between my base and build phase. During the last 1/2 months, my heart rate has spiked faster than normal on equivalent efforts. While my resting or low-effort heart rate is the same, any medium effort raises my heart rate faster. Either i am in zone 1 or zone 4.

I am feeling well on oxygen/lung capacity and muscular strength.

Any help/recs would greatly appreciated!!!


Fatigue, perhaps.

Your heart muscle needs recovery just as much as your leg muscles.