One of the primary benefits of heat pads is their ability to relax tight muscles. Muscle tension is often a significant contributing factor to back pain. When you apply heat, it helps to increase the elasticity of soft tissues, making them more pliable. This relaxation effect can reduce stiffness and discomfort, allowing for greater mobility. The warmth from heat pads can also interfere with pain signals sent to the brain, creating a soothing effect that diminishes the perception of pain.