--- title: Heart and lungs when you run — a lesson of Mova's school · trees and pragmatics description: «Heart and lungs when you run», a lesson of the medicine course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: When you run, your leg muscles burn their fuel with oxygen, and suddenly they need far more of it than when you sit on the sofa. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Medicine](https://md.mova.elamur.ai/free/en/corpora/school/medicine/) / Heart and lungs when you run # Heart and lungs when you run Lesson 36 of the medicine course of Mova's primary school: 19 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/medicine/36-heart-and-lungs-when-you-run/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/0/) — When you run, your leg muscles burn their fuel with oxygen, and suddenly they need far more of it than when you sit on the sofa. - [1](https://md.mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/1/) — So the heart, a muscle about the size of your fist near the middle of your chest, beats faster to push more blood round, and you breathe faster and deeper to bring oxygen in and blow carbon dioxide out. - [2](https://md.mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/2/) — Picture the last lap on sports day: face red, chest heaving, heart thumping in your ears. - [3](https://md.mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/3/) — That is not your body breaking down, it is your body keeping up. - [4](https://md.mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/4/) — Train often and the heart muscle gets stronger and pushes more blood with every beat, so a fit heart can beat more slowly at rest. - [5](https://md.mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/5/) — Puffing is normal; chest pain, fainting or a collapse are not, and someone who collapses and is not breathing normally needs 999 and a defibrillator straight away. - [6](https://md.mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/6/) — Working muscles need much more oxygen, so the heart beats faster and you breathe faster and deeper; being out of breath while running is normal. - [7](https://md.mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/7/) — A child's resting pulse is often about 70 to 100 beats a minute, and it can climb to about 160 to 190 when running hard. - [8](https://md.mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/8/) — You can feel your pulse on the thumb side of either wrist or at the side of the neck; count the beats for 15 seconds and multiply by 4. - [9](https://md.mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/9/) — The heart sits near the middle of the chest, tipped a little to the left, and the pulse can be felt on both wrists. - [10](https://md.mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/10/) — Training makes the heart stronger so it pumps more blood per beat; a fit adult's resting pulse of around 50 to 60 is normal for them. - [11](https://md.mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/11/) — An adult heart at rest beats roughly 100,000 times a day (a lakh, in Indian English); exercise does not use up heartbeats, and over time it lowers the resting rate. - [12](https://md.mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/12/) — At hard effort, breathing through the mouth as well as the nose lets in much more air, and that is fine. - [13](https://md.mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/13/) — A red face and sweat are the body letting heat out, as blood vessels near the skin widen; dizziness, feeling sick or feeling confused mean stop and tell an adult. - [14](https://md.mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/14/) — The talk test: if you can talk but not sing you are working moderately; if you can only gasp a few words you are working hard; both count as exercise. - [15](https://md.mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/15/) — Nerves release adrenaline, which speeds up the heart and breathing even when you stand still, for example before a penalty. - [16](https://md.mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/16/) — With their reliever inhaler, which opens narrowed airways, and an asthma plan, children with asthma can play almost any sport, and many Olympic athletes have asthma; if the inhaler doesn't help, an adult calls 999. - [17](https://md.mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/17/) — After you stop, the heart rate falls fast in the first minute or two, and a slow walk helps you feel less dizzy than flopping down at once. - [18](https://md.mova.elamur.ai/free/en/corpora/school/medicine/36-heart-and-lungs-when-you-run/18/) — Chest pain or fainting during sport is never normal; a person who collapses and is not breathing normally needs 999 and a defibrillator, which is how footballer Christian Eriksen was saved at Euro 2020, played in 2021. - ← previous: [Screens, eyes and sleep](https://md.mova.elamur.ai/free/en/corpora/school/medicine/35-screens-eyes-and-sleep/) - next →: [Warming up, stitches and cramp](https://md.mova.elamur.ai/free/en/corpora/school/medicine/37-warming-up-stitches-and-cramp/) - ↑ back to [Medicine](https://md.mova.elamur.ai/free/en/corpora/school/medicine/)