Why does my lower back hurt after sitting for a while?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Lower back pain after prolonged sitting is often caused by muscle strain, poor posture, or weakened core muscles that fail to support the spine. Common contributors include slouching, an unsupportive chair, or sitting for hours without breaks. Adjusting your seating position, using lumbar support, and standing up to stretch every 30 minutes can significantly reduce discomfort.

However, persistent or worsening back pain may signal an underlying condition such as a herniated disc, sciatica, or spinal issue that requires attention. Rather than guessing, take a free, instant, online symptom check to better understand what's driving your pain and get clear guidance on your next steps.

Reviewed for medical accuracy: 07/15/2026

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Explanation

When you sit for a long time, your lower back can start to hurt. This can happen because your muscles get tired or strained. Sometimes, the way you sit can make it worse.

Possible Causes

Muscle Strain: Sitting for too long without moving can make your muscles tired and sore.
Poor Posture: If you slouch or sit in a bad position, it can put extra pressure on your back.

What Can Help?

Change Your Seat: Using a seat that tilts can help reduce pain by making your back and legs more comfortable.
Take Breaks: Stand up and stretch every now and then to give your muscles a break.

By making small changes, like using a better chair or taking breaks, you might feel less pain in your back. If your lower back pain persists or worsens, consider using our free AI symptom checker to help understand what might be causing your discomfort and when you should seek medical attention.

(References)

Papadopoulos EC, & Khan SN. (2004). Piriformis syndrome and low back pain. The Orthopedic clinics of North America, 15062719.
Sy O, & Phillips ML. (2016). Musculoskeletal symptoms and associated risk factors .... Journal of occupational and environmental hygiene, 26771155.
Udo H, Fujimura M, & Yoshinaga F. (1999). The effect of a tilting seat on back, lower back and legs .... Industrial health, 10547952.

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