What is Heart Rate Variability? How triathletes can use HRV to track recovery and optimise their training

Heart Rate Variability (HRV) can be a useful metric to help you fine tune the balancing act of triathlon training as an age-grouper. We speak to three expert coaches to get their insights on what HRV is, what the data means for endurance athletes and how to use it to optimise your training and recovery.

By Jenny Lucas-Hill

Content Director

Last updated -

25 Nov 2025

Heart Rate Variability (HRV) is a data point which is getting more interest. Smart fitness watches and wellbeing-focused wearables have added HRV as one of the many tracking measures in recent years. ...

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Written by

Jenny Lucas-Hill

Jenny Lucas-Hill was Content Director at TRI247 until Sept 2025. A five-time Ironman finisher, she's also a qualified personal trainer and sports massage therapist.

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