human
I've been having a lot of pain in my lower back lately. What is the cause?
assistant
The most likely cause of your pain is muscle strain or tightness. Muscle strain can occur when you overexert yourself, such as by lifting heavy objects, or if you are not properly warming up before exercising. Other causes could include poor posture, an injury from a car accident or fall, or even arthritis. It's important to consult with a doctor to determine the underlying cause and get treatment.