Look down at your wrist. Chances are, you are wearing an Apple Watch, a Garmin, or perhaps even an Oura ring. You bought it to track your steps and your runs, but every morning it presents you with a wealth of other data – sleep scores, readiness scores, and the mysterious “HRV.”
If you are like many of the clients I work with at RunMoveTone, you probably glance at these numbers, feel slightly confused, and then ignore them.
In 2026, having data isn’t the problem; knowing what to do with it is. Ignoring your Heart Rate Variability (HRV) is a missed opportunity. It is the closest thing we have to a daily fuel gauge for your body, telling you exactly how ready you are to handle stress – whether that stress comes from a heavy barbell session or a difficult day at the office.
Here is the simple guide to decoding your data and using it to avoid burnout.
What is HRV? (The Simple Version)
Most people think a healthy heart beats like a perfect metronome. Thump-thump-thump at exact intervals.
Surprisingly, that is not true. A healthy, resilient heart actually has tiny variations in the time between each beat. If your heart rate is 60 beats per minute, it doesn’t mean it beats exactly once every second. The gap might be 0.9 seconds, then 1.1 seconds, then 1.0 seconds.
Heart Rate Variability (HRV) is simply the measure of this variation.
- High variation (High HRV): Your heart is responsive and adaptable. It is ready to switch gears instantly.
- Low variation (Low HRV): Your heart is beating monotonously like a metronome. This is a sign it is under stress and “stuck” in one mode.
Why Your HRV Score Matters
Your HRV is a direct window into your Autonomic Nervous System. Think of this system as having two modes:
- The Gas Pedal (Sympathetic Nervous System): Fight-or-flight. This kicks in during a HIIT workout, a stressful meeting, or when you are anxious.
- The Brake Pedal (Parasympathetic Nervous System): Rest-and-digest. This is active when you are sleeping, relaxing, or recovering.
A high HRV means your body is gently applying the brake. You are recovered, relaxed, and ready to handle stress.
A low HRV means your gas pedal is stuck to the floor. Your body is in a state of high alert, actively fighting stress (physical or mental), and has very few resources left for a hard workout.
What Kills Your HRV Score?
If you wake up and your tech tells you your HRV has crashed overnight, it’s usually down to one of these common culprits:
- Alcohol: Even one or two drinks can significantly depress your HRV overnight as your body works to process the toxin.
- Poor Sleep: Not just lack of hours, but lack of deep, restorative sleep cycles.
- Overtraining: If you did a heavy leg day yesterday and went for a long run the day before, your body is still deep in repair mode.
- Life Stress: A looming deadline or family issues trigger the same “fight-or-flight” response as a tiger chasing you. Your body doesn’t know the difference.
- Illness: Often, your HRV will drop a day or two before you actually feel sick, as your immune system kicks into gear.
How to Use the Data at RunMoveTone
The most important rule of HRV is: Compare you to you. Do not compare your score to your partner’s or someone on Instagram. Establish your own baseline over a few weeks, and look for trends.
How do we use this data practically?
Scenario 1: Your HRV is baseline or higher than usual.
- The Green Light: Your body is resilient today. This is the day to push for that personal best on your 5k run or attempt a heavier lift in the gym.
Scenario 2: Your HRV is slightly lower than usual.
- The Amber Light: Proceed with caution. You can still train, but perhaps swap a high-intensity session for a steady-state run or a moderate strength session.
Scenario 3: Your HRV has crashed significantly.
- The Red Light: Stop. Do not pass go. Do not do a HIIT class. Your body is screaming for recovery.
- The Solution: This is the perfect day to utilise the strategies we discussed in our previous post: chooseActive Recovery instead of a rest day, or spend 10 minutes doing the Desk-Job Posture Mobility Drills to get moving gently.
Train Smarter, Not Harder
Your wearable tech is an amazing tool, but it needs context. At RunMoveTone, we help clients interpret this data so they stop training blindly. We use your HRV to ensure we are pushing when your body is ready to adapt, and pulling back when it needs to repair.
This is the key to longevity and consistency.
Do you have all the gear but no idea if your training plan is actually working for your body? Let’s book a consultation build a data-informed plan for your goals. Contact me on 07767 608462 or [email protected].
Symone x
