How long can you
hold your breath?

30–60 seconds is a normal healthy-adult range. Over 90 seconds is excellent.

CO₂ builds up and oxygen dips — dizziness is your signal to breathe again immediately.

It trains CO₂ tolerance and control more than it grows lung size — but capacity exercises help.

Sit down, relax fully, take one calm full breath — then train with short repeated holds, not extremes.

Long exhales: inhale 4 counts, exhale 6–8 counts for 2 minutes. Try the trainer on the training page.

Slow-paced breathing (like 4-7-8) helps many people fall asleep faster.

No — 30 seconds is perfectly average and fine for most adults.

Smokers often score under 25s. Treat a low score as motivation, not a diagnosis.

No — never. It masks your urge to breathe and can cause blackout.

This free online breath test is a tap-to-time breath-hold timer: tap start, hold your breath, tap stop — get your time, tier, and tips instantly.

A lung capacity test measures how much air your lungs can hold — during a medical screening, lung capacity testing is a standard procedure done with spirometry.

Average total lung capacity is about 6 liters for adult men and 4.2 liters for women, slowly declining with age — see the chart below.

You can't greatly grow lung size, but you can increase usable lung capacity with cardio, diaphragmatic breathing, and slow-exhale training.

Yes — this healthy lung test at home uses a simple lung test timer: hold your breath and time it. No machine needed.

If you feel shortness of breath at rest or with light activity, skip the test and talk to a clinician first.

For daily breathing and easy exercise, nose breathing usually wins: it filters, warms, and slows the breath. Mouth breathing helps only at very high effort.

Wim Hof breathing is 30–40 fast deep breaths followed by a relaxed exhale-hold. It temporarily extends holds by blowing off CO₂ — always practice seated, never in water.

A lung age test compares your spirometry result to age averages — if your lung age is older than you, it signals reduced airflow worth discussing with a clinician.

At home you can time a breath hold (30–60 seconds is normal), track how stairs feel, and scan for symptoms — but only clinic spirometry truly measures lung health.

The longest breath hold world record is 24 minutes 37 seconds (with pure oxygen). Without oxygen assistance, elite freedivers exceed 11 minutes.

Breathwork is intentional breathing exercises — pranayama, box breathing, 4-7-8, Wim Hof — practiced to shift calm, focus, energy, or sleep. Slow-paced styles have the strongest evidence.

CO2 tables are freediving apnea training: repeated breath holds with shrinking rests. They raise CO2 tolerance — the main limiter of your hold — adding 10–20 seconds in weeks.

The physiological sigh is a double inhale through the nose followed by one long slow exhale — the fastest real-time way to calm down, backed by Stanford research on cyclic sighing.

Box breathing is four equal counts: inhale 4 seconds, hold 4, exhale 4, hold 4. Four rounds take about a minute and slow your breathing to under four breaths a minute.

4-7-8 breathing is inhale for 4, hold for 7, exhale for 8. The long exhale slows your heart rate; three rounds at lights-out is the standard starting dose.