Okay kiddo, so imagine you have a big bag of marbles, and you want to carry it up a hill. As you climb up the hill, you might notice that it gets harder and harder to carry the bag of marbles because the hill is getting steeper and steeper. This is kind of like what happens to a person's strength when they lose the strength gradient.
The strength gradient is just a fancy way of saying that your muscles are stronger when you're using them in certain ways. For example, if you're trying to lift something heavy off the ground, your leg muscles will be stronger than your arm muscles because your legs are used to pushing against the ground to help you move around. But if you're trying to lift something over your head, your arm muscles will be stronger because they're used to lifting things up and holding them steady.
Now, let's say you stop using your leg muscles because you start using a wheelchair to get around instead of walking. Over time, your leg muscles might start to get weaker because you're not using them as much. This means that you'll start to lose the strength gradient—you'll be less able to lift things off the ground because your leg muscles aren't as strong as they used to be.
This can be a problem because it can make it harder for you to do everyday things like carrying groceries or climbing stairs. But the good news is that you can work to keep your muscles strong and prevent the loss of strength gradient. You can do things like walking or swimming to keep your leg muscles strong, or doing arm exercises like lifting weights to keep your arm muscles strong. That way, no matter what you need to lift, you'll be able to do it with ease!