For many people, their left shoulder is slightly higher than their right, because they hold their bodies at slant, doing activities such as driving, where one arm stays low to change the gears, while the other stays higher up to do the steering. Over time, that means the muscles on one side of your body develop more than the other, an asymmetry that can cause back pain, says a German physiotherapist. Physiotherapist Alexander Srokovskyi says these asymmetrical activities like when driving a car can have a profound impact on our backs. When you get out of your car and start walking, the followi…