
Heart Rate and Heat: Why It Spikes and How to Adjust Your Training
Running in the heat can send your heart rate higher than expected, even at an easy pace. Learn why cardiovascular drift happens and how to adjust your training safely.

Running in the heat can send your heart rate higher than expected, even at an easy pace. Learn why cardiovascular drift happens and how to adjust your training safely.

Recovery runs are supposed to help you absorb training, not add hidden fatigue. Learn how to find your recovery run pace, avoid common mistakes, and use VO2 max testing to set more accurate zones.

Your running watch is a helpful tool, but its heart rate zones may not be as personal as they look. Here’s why estimated zones can mislead your training, and how VO₂ max testing can give you a more accurate heart rate zone prescription.
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