What is a sciatica? They’re the longest nerve in the human body. They start at the spine base and run right down through your thigh and calf muscles to your foot. You also have two of them. Generally those suffering from acute sciatica pain recover from it within 6 months. However, in a few cases it can develop into chronic sciatica. Here are 4 easy exercises to relieve sciatica pain in 16 minutes or less!