Anthropometry is a big word that means measuring your body to help people learn more about you.
Just like how you wear different sized clothes, everyone's body is different. Anthropometry helps people study these differences by measuring things like your height, weight, and the length of your arms and legs.
Scientists use this information to learn about things like if people from different countries have different body sizes or if our bodies are changing over time. It's kind of like studying how different types of plants grow in different parts of the world.
Anthropometry can also help people design things like furniture, cars, and clothes that fit everyone better. This is because if we know how big people are, we can make things that fit them properly and are more comfortable to use!
So, to sum up, anthropometry helps people learn about and measure different body sizes to help design things that fit and are more comfortable to use.