https://www.nbcnews.com/better/health/why-bags-are-wrecking-our-backs-ncna803541
I can remember carrying math, history, science books calculator pens and pencils. It all had to weigh at least 10 pounds or more plus a bag lunch in my backpack. Books were hard cover and changed out per day for the classes scheduled. Now kids can download the book on a phone or tablet.
Back problems are painful. Can occur in an instant just by stretching the wrong way. Anything that can be done to prevent this in our young should be attempted. Adults can learn from this also by trying to go with a lighter load to carry if possible.
Stay Safe Always
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