If you have just measured your BOLT score, or you are about to, you probably want a simple answer. What number should you be aiming for? Here it is, plainly, along with what the number does and does not tell you.
First, one important note. If you have a condition listed on our safety page, do not do breath holds without medical advice.
What is the BOLT score in the first place?
The BOLT score, short for Body Oxygen Level Test, is a simple timed measure of how soon your body signals the urge to breathe after a normal exhale. It comes from the Oxygen Advantage method developed by Patrick McKeown, who uses it as a practical way to estimate how sensitive your body is to rising carbon dioxide.
That sensitivity matters. When you hold your breath, oxygen levels barely change in the first seconds. What changes is carbon dioxide, which builds gently and triggers the urge to breathe. If that urge arrives very early, your body is reacting strongly to small changes. If it arrives later, your breathing is likely calmer and more efficient day to day.
McKeown’s insight was that this one number gives you a useful, repeatable snapshot of your everyday breathing habits, not just what happens during a test.
What is a good BOLT score, then?
A score of 20 to 30 seconds suggests good functional breathing, and 30 seconds or more is excellent. Here is the full picture, as a rough guide for practice:
- Under 10 seconds. You have lots of headroom. This is not a bad result, it is a clear starting point. Small, gentle daily practice tends to move this number.
- 10 to 20 seconds. A solid start. Many people who sit at a desk all day, breathe through the mouth, or feel generally wired land here.
- 20 to 30 seconds. Good functional breathing. Your body tolerates normal changes in carbon dioxide without overreacting.
- 30 seconds or more. Excellent. This is the range McKeown suggests aiming toward over time, with patience rather than force.
One thing to say plainly: your BOLT score is not a diagnosis. It does not tell you whether you have a medical condition, and a low score does not mean something is wrong with you. It is a practice marker, like a resting heart rate for your breathing habits. If you have health concerns, that is a conversation for your doctor, not for a stopwatch.
How do I measure my BOLT score correctly?
You measure it seated, calm, after normal nasal breaths, and you stop the timer at the first clear urge to breathe, not at your maximum hold. That last part is where most people go wrong, so here is the full method:
- Sit down and rest for a few minutes. Do not measure straight after exercise, coffee, or a stressful call.
- Breathe normally through your nose. Nothing deep, nothing forced.
- After a normal, relaxed exhale, pinch your nose closed and start the timer.
- Stop the timer at the first definite urge to breathe. That might be a swallow, a twitch in the belly or throat, or simply the first clear signal from your body.
- Release your nose and breathe in through it, calmly. If you gasp, you held too long, and the number is not valid.
The test measures sensitivity, not willpower. Pushing to your limit gives you a bigger number and a useless one. When you are ready, you can take the guided version on our BOLT test page, which walks you through the timing.
Why does my BOLT score change from day to day?
Because your breathing changes from day to day, and the score simply reflects it. Poor sleep, alcohol, stress, a heavy meal, or a blocked nose can all lower your score temporarily. That is normal.
For a fair picture, measure at the same time each day, ideally in the morning before coffee, and look at the weekly trend rather than any single reading. One low morning means nothing. A trend over weeks tells you something real about how your daily habits are settling.
How do I improve a low BOLT score?
Slowly, gently, and mostly through everyday habits rather than heroic breath holds. The basics matter most: breathe through your nose during the day, keep your breathing light and quiet at rest, and slow down during easy exercise so nasal breathing stays comfortable.
This is also where the score connects to something bigger. Breathing is one of the tools we use in Mind Body Regulation, which is the wider practice of noticing what state your body is in and learning to shift it. A rising BOLT score is often a sign that your baseline state is settling, not just that you are better at a test.
If you want structure and someone to check your technique, that is exactly what coaching is for. Most people do not need much correction, but the small details, like where you stop the timer and how light your breathing is, make a real difference.
What should I do right now?
Take the test once, write the number down, and do not judge it. That first measurement is your baseline, and the only comparison that matters is with your own future scores.
Then give it a few weeks of quiet, consistent practice and measure again. No forcing, no chasing numbers, and again, if anything on our safety page applies to you, speak to your doctor before doing any breath holds at all. The score will follow the habits. It almost always does.
