Erg

Okay kiddo, so you know how sometimes you get tired and your muscles feel all achy? Well, that's because your body has been using energy to do things like run around or play with your toys.

Now, when we talk about erg we mean the work that your body does to use that energy. It's like a measure of how hard your muscles have to work to do something.

Erg can also be used to talk about machines that help people exercise, like a rowing machine or a stationary bike. These machines measure how much work you're doing and how many calories you're burning.

Basically, erg is all about measuring the physical effort that people put into things like exercising or doing work. It's important to keep track of erg so we can make sure we're getting enough exercise and not overworking our bodies.