Which of the following is a common treatment for muscle spasms in the back?

Heat therapy is a common treatment for muscle spasms in the back because it helps to relax tense muscles and improve blood flow to the affected area. The application of heat can soothe discomfort and reduce stiffness, making it an effective option for relieving muscular tension. Applying heat can be done through various methods such as heating pads, warm baths, or hot packs, providing both immediate relief and promoting relaxation.

Using heat therapy for muscle spasms is supported by its ability to alleviate pain, enhance flexibility, and facilitate quicker healing of muscle tissue. It's important to note that while other treatments like weightlifting can strengthen muscles over time and spinal fusion may be appropriate for specific spinal conditions, they are not primarily designed to address acute muscle spasms. Additionally, extreme bed rest is generally discouraged as it may lead to further stiffness and deconditioning of muscles.