Heavy bags could be causing you back and shoulder pain. 80% of the US population may have back pain at some point in their lives.
Back Pain Causes: Is My Heavy Purse to Blame?
The Heavy-Purse Syndrome - Occupational Therapy
Back Pain in Gymnastics - A Complete Guide
Bag hurting your back, again? - Dallas Wellness Center
Shoulder pain Causes, symptoms, treatments
What are the pros and cons of using a backpack vs. a shoulder bag? - Quora
What are some possible causes of pain in the back of my neck, shoulders, and upper arms? - Quora
Is Your Bag Causing Neck and Back Pain? Here's How to Fix It
How to Carry Your Purse/Bag and Avoid Pain
Do You Suffer From HPS (Heavy Purse Syndrome)? - Desired Health Chiropractic