Why does my lower back hurt when I slouch?

When you slouch, you might feel pain in your lower back because this posture can put extra strain on your spine and muscles. Prolonged Sitting: Sitting in a slumped posture for a long time can increase stress on the spine, leading to discomfort. Muscle Strain: The muscles in your back have to work harder to support your body when you slouch, which can cause pain. Spinal Pressure: Slouching can also increase the pressure on the discs in your spine, which might lead to pain over time. To help prevent this pain, try sitting up straight and taking breaks to move around.