What If You Never Needed to Breathe?

What if you never breathed again, and felt completely fine? You've been at the bottom of a pool for 11 minutes, past the breath-hold world record, and you're not even holding your breath. One morning your lungs simply stop, but your blood stays full of oxygen. You spend afternoons on a coral reef with no tank, walk up Everest without bottled oxygen and stroll through smog that can't touch you. Then the price arrives: your voice is made of air, and so is your laugh, your sense of smell and even a sigh. And one day at the harbour, someone needs the one thing you can't give anymore: a breath. Would you give up breathing to never drown again? Tell me in the comments. ⏱ Chapters 0:00 Eleven minutes underwater 0:37 What breathing does 1:30 How it works 2:07 Superpowers 3:00 Medically impossible 3:33 The price of no air 4:54 The rescue 6:15 Breathe again? 7:00 The first breath 7:18 Would you do it? 🔬 Science notes • The official breath-hold record on normal air is 11 min 35 s (Stéphane Mifsud, 2009, AIDA). The longest ever is 29 min 3 s (Vitomir Maričić, 2025), after breathing pure oxygen first (Guinness World Records). • At rest adults breathe about 12 to 20 times a minute: roughly 20,000 breaths and around 10,000 litres of air a day, about half a billion breaths in a lifetime. • Air is about 21% oxygen. The air you breathe out still has about 16% oxygen and about 100 times more carbon dioxide (about 4% instead of 0.04%). That leftover oxygen is why rescue breaths work. • Your brain is about 2% of your body weight but uses about 20% of your oxygen. Some brain cells start dying less than 5 minutes after their oxygen supply stops (MedlinePlus, U.S. National Library of Medicine). • The urge to breathe when you hold your breath is triggered mainly by rising carbon dioxide, not by falling oxygen. • On the summit of Everest the air pressure is about a third of sea level, so each breath carries about a third of the oxygen (Matthews et al., iScience, 2020). Between 1979 and 2019, 177 people reached the summit without bottled oxygen. • In 2022 the World Health Organization reported that 99% of the world's population breathes air that exceeds its air-quality guideline limits. • Most people who die in fires are killed by smoke inhalation, not by burns (U.S. Fire Administration). • Your voice is exhaled air making your vocal folds vibrate. Smell needs air flowing through the nose, and much of what we call flavour is smell coming from the mouth on the out-breath. • People sigh every few minutes without noticing, about 12 times an hour, which helps re-open tiny air sacs in the lungs (Li, Feldman et al., Nature, 2016). • For drowning, first aid guidelines start with rescue breaths: 5 initial breaths, then 30 compressions to 2 breaths (European Resuscitation Council Guidelines 2021). This is a work of fiction based on real science. Please keep breathing. The power, the treatment, the rescue and all the characters are invented. If you ever see someone drowning, call emergency services first. Subscribe for the next "what if". #WhatIf #Breathing #Animation