The KEORA journal
Understanding your body, one data point at a time
Deep sleep, heart rate variability, stress, longevity. Clear, evidence-based articles to turn your measurements into habits that actually matter.
How to improve your deep sleep: 7 proven levers
Deep sleep repairs your body and consolidates your memory. Here's how to get more of it, naturally.
HRV explained simply: your best recovery indicator
Heart rate variability reveals the state of your nervous system. Learn to read it and improve it.
Managing everyday stress: what your body is trying to tell you
Stress leaves measurable traces. Spot them early and take back control with simple actions.
Longevity: 5 habits to slow down your ageing
Living longer in good health comes down to a few daily pillars. Here's what they are, and why they matter.
How many hours of sleep do you really need?
Seven, eight, nine hours? Find your real sleep need and measure it.
Night wakings: common causes and solutions
Why you wake up at night, and how to get back to sleeping through.
Body temperature and sleep: the overlooked connection
Why your body needs to cool down to sleep well, and what your temperature reveals.
Resting heart rate: what it reveals about your health
A simple number that says a lot about your fitness and recovery.
Overtraining: recognise the signs before it's too late
Fatigue, underperformance, disrupted sleep: the signals you shouldn't ignore.
Recovery after exercise: the complete guide
Sleep, nutrition, hydration: the real levers of recovery.
Heart coherence: the anti-stress breathing technique that works
A simple, proven breathing technique to calm stress.
Cortisol: understanding the stress hormone to manage it better
A vital hormone that only becomes a problem when it stays too high.
Burnout: the signals your body sends before exhaustion sets in
Your body sounds the alarm before burnout hits. Learn to listen to it.
How many steps a day to stay healthy?
10,000 steps, really? Here's what the science says — and it's encouraging.
Smart ring or smartwatch: which one should you choose?
Comfort, battery life, sleep, discretion: the real differences.
Ashwagandha: benefits, uses and what the science says
The world's most studied adaptogen: real benefits and how to use it right.
Sleep debt: how to actually pay it back
Spot, recover from and avoid sleep debt, without sleeping in all Sunday morning.
The perfect nap: ideal length and benefits
Short and well-timed, a nap boosts alertness and mood. Here's the proof.
Melatonin: do you really need to take it to sleep?
It's not a sleeping pill. When it really helps, and at what dose.
Blue light and sleep: should you avoid it in the evening?
The real impact of screens on your ability to fall asleep, and how to protect yourself.
Rest days: why they make you progress
Rest isn't the opposite of effort, it's where you actually make progress.
Zone 2 training: the endurance method that changes everything
The gentle intensity that builds your aerobic engine and heart health.
Sauna and cold bath: what are they really worth for recovery?
Hot, cold or both? What science says about these rituals.
Meditation: what it really does to your nervous system
Beyond the mind, what meditation actually changes in your body.
Stress and digestion: the gut-brain connection explained
Why stress speaks through your gut, and how to soothe both.
4-7-8 breathing: fall asleep faster, naturally
A simple technique to calm your mind and fall asleep faster.
Blue Zones: the secrets of the regions where people live the longest
What the world's longest-living regions have in common.
Hydration: its real impact on energy and performance
Even mild dehydration is enough to tank your energy and focus.
Intermittent fasting: what you need to know before you start
How it works, the possible benefits, the limits and precautions.
Collagen: real benefits for your skin, hair, and joints
What collagen supplementation really delivers, and for whom.