Kovr blog · Training
HRV, load, heat, taper and the numbers your watch gives you — read for what changed and why.
Training
Dew Point for Runners: The Chart, the Threshold and What It Costs
Dew point, not humidity, sets how hard a run feels. The chart of comfort bands, the temperature-plus-dew-point cost method, and how to pace by it.
Training
How to Pace a Race in the Heat: Adjust Your Goal for the Forecast
A cool-weather goal is a ceiling on a hot day. How to adjust race pace for temperature and dew point, start conservatively, use pre-cooling and run by effort.
Training
Why Your HRV Drops During Taper
Running less than you have in months, and every number looks worse. The taper is when recovery gets paid for, not when it pays out — plus the three cases where the dip is a real flag.
Training
Why Your VO2 Max Drops at 100% Heat Acclimation
You did the weeks, the watch says you’ve adapted, and the number fell anyway. Acclimation is a status, not a correction — and dew point is the variable breaking the estimate.
Training
How to Actually Understand Your Garmin Data (Not Just Collect It)
You've got years of HRV, sleep, training load and VO₂max — but a watch collects data, it doesn't explain it. How to turn the numbers into a plain-English why, and how to choose an app that reads the data you already have.
Training
Cardiac Drift: Why Your Heart Rate Climbs on Easy Runs
You start an easy run at 135bpm and drift to 155 at the same pace — without slowing, without losing fitness. That's cardiac drift. What causes it, when it's normal, when it's a flag, and the simple test that turns it into a fitness marker.
Training
Why Every Race Predictor Gives You a Different Time (And How to Use One)
Garmin says 3:51. Coros says 4:13. Apple's VO₂max disagrees with both. Why every device measures differently, how accurate the estimates really are — and the variable none of them price in: the weather you'll actually race in.
Training
Your Plan and Your Tracker Describe the Run. Nothing Describes You.
Your plan tells you what to run. Strava logs what you did. Both describe the session — neither reads the body that absorbed it, which changes every morning. The missing layer in your training stack, and why it isn't another tracker.
Training
Lost Fitness, or Just the Weather? How to Tell the Difference
You ran slower than last week and the worry creeps in — but a single slow run is rarely fitness loss. Here's how to separate heat and humidity from genuine decline, using heart rate against pace, HRV trends, and the difference a hot morning really makes.
Training
What Each Wearable Writes to Apple Health: Garmin, Apple Watch, Oura & WHOOP Compared
They all sync to Apple Health — but not the same things. Exactly which workouts, active energy, HRV and sleep each device writes to HealthKit, the catches that leave data missing, and what it means for any app reading your health data.
Training
Garmin Training Readiness Explained: What Your Score Actually Means (and Where It Falls Short)
Garmin gives you a single 0–100 readiness score every morning, built from six hidden-weighted factors. Here's what each band means, how to fix a low score, the difference from Training Status, and the one thing the number can't tell you.
Training
HRV for Runners: What Your Heart Rate Variability Actually Means for Training
Your Garmin has a number. Your Oura has a score. Your Apple Watch has a colour. Here’s what they’re all actually measuring — and how to make better training decisions with it.
Training
Am I Overtraining? The Signs Runners Miss Until It’s Too Late
More than 60% of serious runners will experience overtraining at least once. Here are the early signals — and why HRV catches them days before you feel it.
Training
Why Was My Run So Hard Today? HRV, Glycogen, Heat or Load — Which One Was It
Bad runs feel mysterious from the inside. They’re not. Here’s how to diagnose the cause — and what to do about it tonight.
Training
Training Fatigue vs Fitness Loss: Why You Feel Slower Despite More Training
Feeling slow doesn’t mean you’re losing fitness. Here’s the 30-year-old model that explains why — and how to read the difference in your own data.
Training
Marathon Training Burnout: How to Spot It in Your HRV Before You Feel It
The burnout trajectory is visible in your data weeks before you feel it. Here’s how to read the signal — and what to do when you see it.
Cycling
HRV Training for Cyclists: Why Your Ride Feels Hard After a Run Day
A 2025 study on 28 experienced cyclists found HRV-guided training improved FTP and maximal power output. Here’s what that means for how you plan your week.
Swimming
Swimming and HRV: How Long Does It Take to Recover From a Hard Swim Session?
Research shows HRV drops consistently after 3–5 days of high swim volume. Here’s how to use that signal — and why it matters especially if you also run or ride.
Cross-Training
Reformer Pilates for Runners and Cyclists: HRV, Recovery and Why Your Spine Needs It
Reformer Pilates produces parasympathetic HRV improvement post-session. For cyclists it decompresses the spine and restores hip flexors the bike shortens. Here’s the science and how to fit it in.
Training
Strength Training for Runners: HRV, Sequencing and the Running Economy Gains
A 2025 randomised trial found 10 weeks of heavy strength training twice weekly produced significant running economy gains. Here’s the HRV suppression timeline and sequencing rules.