Okay kiddo, so you know how we need oxygen to breathe and stay alive? Oxygen is found in the air we breathe, but sometimes we need to control how much of it we breathe in. This is called limiting oxygen concentration.
Imagine you have a toy box full of toys, but you only want to play with one toy at a time. So, you take out one toy and put the rest back in the box. That's like limiting the oxygen concentration. We want to breathe in only a certain amount of oxygen at a time, so we control how much we breathe in.
When we limit oxygen concentration, it can be for different reasons. Sometimes, people work in places with chemicals or other dangerous things that can catch on fire if there's too much oxygen around. So, they need to limit the amount of oxygen to make sure nothing catches on fire.
Other times, when people are exercising or working out, limiting oxygen can help them train better. It's kind of like when you're playing a game and you want to make it harder so you can get better at it. So, by limiting oxygen when we're exercising, our bodies have to work harder, and this can help us get stronger and healthier.
Remember, limiting oxygen concentration means controlling how much of it we breathe in. Just like we control how many toys we take out of the toy box, we control how much oxygen we breathe in.