Article: It's important for both your comfort and health to make sure that your backpack doesn't get too heavy as the school year progresses. For example, if you're continuously adding assignments, projects, snacks, and additional school supplies, your bag is going to gain some weight. If you notice that it's difficult to lift your bag or that the straps cut into your shoulders, it's probably time to clean out and reorganize. Your backpack shouldn't weigh more than 10-20% of your weight. For example, if you weigh 120 lbs, your backpack shouldn't weigh more than 12 lbs. You don't want anything in your bag except what is absolutely necessary; your school books, writing utensils, and current assignments. This will not only help with the weight of your bag but also keep you organized. For example, you probably don't need to keep returned assignments, projects, or instructions for homework you've already completed. Though papers don't weigh a lot on their own, they can really add up when you're saving a bunch of them. Instead, keep a binder or file folder at home for all returned papers. You can even organize it by subject. This way, if your teacher requests an older assignment, you'll know exactly where it is and how to find it. You don't have to do this every day, but you should try to clean out your bag every two weeks or every month. It's difficult to keep everything in place and organized when you are moving from class to class all day. You might start throwing your pens and pencils directly into your bag and shoving your papers into your books instead of your folders. To avoid this, try taking an hour or two at the end of the week, or every other week, and clean out your bag.  You should take everything out and go through it. Throw or file away unnecessary papers, trash, old food, and broken pens or pencils. Make sure assignments or papers are in the appropriate folders and organize them by date if you can. You can also wash or vacuum out your bookbag at this time, too.

What is a summary?
Watch the weight of your bag. Keep everything in your backpack current. Clean out your backpack regularly.