This video explains the causes and symptoms of sciatica and Piriformis Syndrome—conditions that cause pain radiating from the lower back down through the legs. The instructor clarifies that while the sciatic nerve is the longest nerve in the human body, the piriformis is a muscle in the buttocks that, when tight, can compress this nerve and cause numbness or weakness [00:00:12]. These issues are particularly common among individuals with sedentary jobs (like IT or banking) and those with excess weight around the hips
