It is a great tool to help you move forward and there are a lot of different exercises out there to keep your back happy for a long time.
Sciatica is not a medical term for diagnosing something, it is actually a term used for the symptoms of nerve irritation. Basically, you have 5 major nerves in your body that get irritated through compression or some sort of other irritation. This can cause you to have a lot of pain your lower back, legs and even your feet. There are also other symptoms that arise such as numbness, muscular weakness, and a difficulty to move parts of your body, such as your leg. If you're suffering from this, it isn't something you'd wish on an enemy.
This sciatica exercise is quite easy to do. You can do this before you goto bed or first thing in the morning. It really is your choice when you do it. You want to lie down flat on your back. Bring your knees close to your chest and hug them. What this effectively does is stretch out your lower back. This forces it to expand and it will help take any sort of compression on the nerve causing the pain.
It's a great exercise because it is easy to do and you can do it from home. There are a lot of other solutions out there that are expensive and dangerous. Surgery is probably one of the most dangerous things you could do because the risks are there. Stick with this. I hope this sciatica exercise helps you relieve pain in your back.