--- title: Sleep, exercise and growing up — a lesson of Mova's school · trees and pragmatics description: «Sleep, exercise and growing up», a lesson of the world course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: Sleep is not wasted time. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/) [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/) / [World](https://md.mova.elamur.ai/free/en/corpora/school/world/) / Sleep, exercise and growing up # Sleep, exercise and growing up Lesson 38 of the world course of Mova's primary school: 21 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/world/38-sleep-exercise-growing/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/0/) — Sleep is not wasted time. - [1](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/1/) — While you sleep the body releases growth hormone and repairs itself, and the brain sorts and stores what you learned during the day. - [2](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/2/) — Children of 6 to 12 need about 9 to 12 hours of sleep a night. - [3](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/3/) — Bright screens late in the evening make it harder to fall asleep, because the brain takes the light as a sign that it is still day. - [4](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/4/) — Exercise makes muscles stronger, including the heart, and makes bones thicker and stronger. - [5](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/5/) — About an hour of active play a day is good for children. - [6](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/6/) — A muscle that is used grows stronger; a muscle that is not used gets weaker. - [7](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/7/) — Astronauts in space, where they do not have to hold up their weight, lose muscle and bone unless they exercise every day. - [8](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/8/) — People grow fastest as babies and again in their teenage years, at puberty. - [9](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/9/) — Growing depends on genes, food, sleep and exercise; everyone grows at their own pace. - [10](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/10/) — During sleep the body releases growth hormone and repairs itself. - [11](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/11/) — Sleep helps the brain to remember what it learned. - [12](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/12/) — Children aged 6 to 12 need about 9 to 12 hours of sleep a night. - [13](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/13/) — Bright screen light at night makes it harder to fall asleep. - [14](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/14/) — Exercise makes muscles, the heart and bones stronger. - [15](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/15/) — Children should be active for about an hour every day. - [16](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/16/) — Muscles that are not used become weaker. - [17](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/17/) — Astronauts exercise every day in space to keep their muscles and bones strong. - [18](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/18/) — Children grow fastest as babies and again during puberty. - [19](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/19/) — A warm-up before sport and a cool-down after help prevent injuries. - [20](https://md.mova.elamur.ai/free/en/corpora/school/world/38-sleep-exercise-growing/20/) — Everyone grows at their own pace. - ← previous: [Germs, hygiene and vaccines](https://md.mova.elamur.ai/free/en/corpora/school/world/37-germs-hygiene-vaccines/) - next →: [First aid and safety](https://md.mova.elamur.ai/free/en/corpora/school/world/39-first-aid-and-safety/) - ↑ back to [World](https://md.mova.elamur.ai/free/en/corpora/school/world/)