Common Causes of Lower Back Pain and How Exercise Can Help

Why your back hurts

Pain rarely comes from a single cause. More often, it's a build-up of small things — long hours of sitting, weak deep core muscles, tight hips, or simply doing too much too soon after a quiet stretch. The body is remarkably adaptable, but that adaptability has limits. When the demands you place on your spine outstrip the capacity of the tissues around it, pain is the signal.

• Prolonged sitting and poor desk ergonomics
• Weak gluteal and core stabilisers
• Tight hip flexors and hamstrings
• Sudden spikes in load (a big garden day, a heavy gym session)
• Stress, poor sleep and general deconditioning
• Previous injuries that were never fully rehabilitated
• Repetitive movement patterns without adequate recovery

The myth of rest as treatment

For decades, the standard advice for back pain was bed rest. We now know this is one of the worst things you can do. Prolonged inactivity leads to muscle wasting, joint stiffness, and a nervous system that becomes increasingly protective — making you more sensitive to pain, not less. The evidence is clear: early, guided movement produces better outcomes than passive approaches in nearly every category that matters.

How exercise actually helps

A targeted programme does three things: it restores confidence in movement, rebuilds the muscles that protect your spine, and gradually exposes your body to the loads it needs to handle in real life. This isn't about doing crunches or stretching for hours. It's about progressive, purposeful loading — starting where you are and building systematically from there.

Exercise also has a powerful effect on pain perception. Regular movement helps calm an overactive nervous system, reduces fear-avoidance behaviour, and gives you a sense of control over your own body — which is often the first thing back pain takes away.

Where to start

Begin with gentle mobility, breathing and low-load core work. Walking is often the single best starting point — it's rhythmic, low-impact, and naturally encourages the trunk stability your spine needs. As symptoms settle, progress into hip strengthening, hinging patterns and full-body resistance training — guided by a biokineticist who can dose the load to your body, not a generic plan.

When to seek professional help

Any back pain that persists beyond two weeks, radiates into the leg, is accompanied by numbness or weakness, or worsens with specific movements deserves a proper assessment. Red flags like bowel or bladder changes, saddle anaesthesia, or progressive weakness require urgent medical attention. For everything else, a biokinetic assessment can identify the specific drivers of your pain and build a clear roadmap to recovery. Biokinetics rehabilitation for back pain and sciatica is available in Cape Town and online.

Key takeaways

• Most lower back pain is mechanical and responds well to exercise
• Rest beyond the first day or two usually makes things worse
• Progressive, guided loading is the gold standard for recovery
• Early intervention leads to faster, more complete outcomes
• A biokineticist can identify your specific drivers and build a targeted plan