1. Too Little Use: Not moving and stimulating your spinal muscles regularly, they lose strength and can become stiff. Basically if you don’t use it you lose it.
2. Sudden Intensity: Doing an activity that you’re not used to like lifting an object, or bending in an unusual way, or pushing too hard when exercising (without enough strength), can lead to excess back muscle soreness and strains.
3. Nervous System Overload: Being overloaded with fear, thoughts and emotions can put strain on the nervous system, make the breathing become shallow and put strain on the organs. This creates a storm in the body that can lead to back tension and pain.