If you’re wondering “do I need to hold my breath underwater?” to swim, the answer is a reassuring no — in fact, holding your breath is what makes swimming feel panicky and exhausting. The real skill is breathing out slowly while your face is under. This guide explains why, how to build the habit, and one important safety point about breath-holding.

The short answer

No — you generally shouldn’t hold your breath while swimming. Instead, breathe out slowly and continuously the whole time your face is in the water, so the only thing you need to do when you surface is breathe in. Steady exhaling keeps you calm, keeps water out of your nose, and stops the gasping that makes beginners panic. Holding your breath is not only unnecessary, it actively makes swimming harder.

Why breathing out beats holding your breath

Here’s the mistake almost every beginner makes: they hold their breath the moment their face goes under, then try to breathe out and in during the half-second their mouth clears the surface. It doesn’t fit — so they gasp, tense up, and run out of air within a few strokes.

Breathing out underwater flips this around. If you spend the underwater time slowly letting air out, then when your mouth reaches the air you have just one simple job: breathe in. Suddenly there’s plenty of time, the panic fades, and swimming feels far less tiring. This is the single biggest breathing insight for beginners — and it’s covered in depth in how to breathe while swimming for beginners.

The bubble-blowing habit

The way to build this is simple and it’s the most useful drill in beginner swimming: blowing bubbles.

  • Take a normal breath.
  • Lower your mouth (and then nose) to the surface or just under.
  • Breathe out slowly and steadily, making a continuous stream of bubbles.
  • Lift or turn your head and breathe in. Repeat.

Practice it standing in shallow water until the slow out-breath feels natural. It does two things at once: it keeps water out of your nose (a steady stream of air out means water can’t get in), and it turns “hold my breath and hope” into a calm, controlled rhythm. If getting your face under is still the hard part, start with how to put your face in the water.

When do you hold your breath, then?

Naturally, there’s a brief moment where you’re not actively exhaling — like the instant you push off into a glide, or duck under for a second. That short, relaxed pause is fine and normal. The point isn’t that your lungs must be emptying every millisecond; it’s that you should not lock up and hold a big breath through your whole stroke. Think “slow, steady leak of air,” not “clamp down and hold.”

An important safety point about breath-holding

This matters, so read it: prolonged breath-holding underwater can be dangerous. In particular, taking several rapid, deep breaths first (hyperventilating) to “hold longer” can cause a sudden blackout underwater — with no warning and no urge to breathe first. This has caused drownings even among strong swimmers.

So:

  • Never hyperventilate before going under to extend a breath-hold.
  • Don’t play breath-holding or “who can stay under longest” games.
  • Don’t push your breath-holding limits, especially alone.
  • Never swim alone, and always have a lifeguard present.

For everyday swimming, none of this is a concern — because you’ll be breathing out steadily, not holding long breaths at all.

Getting tired? Check your breathing first

If you burn out fast in the water, breath-holding is very often the culprit — you’re essentially swimming while barely breathing. Fixing the exhale usually transforms how far you can go; more on that in why do I get tired so fast when swimming.

A quick safety note

Practice breathing in water you can stand in, with a lifeguard or capable swimmer present — never alone. Keep it calm, and stand up to breathe any time you need to.

The next small step

Next session, forget swimming and just practice bubbles: stand in the shallow end, take a breath, put your mouth to the water, and hum a slow stream of bubbles out. Twenty calm repetitions of that — breathing out, not holding — is the habit that makes every other part of swimming easier.