By Dr. Matthew Hannikainen DC — The Well Adjusted Chiropractic Centre, Toronto If you commute into downtown Toronto every day carrying a laptop bag, a heavy purse, or a loaded backpack, your spine is absorbing a mechanical stress that most people never think to connect to their back pain, neck tension, or headaches. Bag carrying is one of the most overlooked contributors to structural spinal problems we see at our clinic. It's not dramatic — it doesn't feel like an injury. It