1. Improve flexibility
You might not be able to touch your toes as you're in a course, let alone earn a backbend. But if you stick to it, then you'll notice that it will gradually loosen, and the apparently hopeless posture will become potential. You could also notice that pain begin to disappear.
2. Protect the spine
Spinal disk - a shock absorber between the vertebrae that could suffocate and compress the nerves - eager to work out. This is the only way that they can get nourishment. In case you have a balanced asana practice with lots of backbends, front bends, and twists, then it is going to help keep your disc soft.
3. Help you focus
Since your brain will be quieter and much more cluttered after yoga practice. Various studies have shown that following a yoga course, you're generally better able to concentrate on resources, process information more accurately, and find out, maintain, and update information more effectively.
4. Help you breathe better
Breathing is exactly what novices often struggle with, but as time goes, the movement of breathing becomes second nature. Provided that you can breathe more fully and deeply, it's going to have a profound impact on overall health and is well worth practicing every day. You may not own a position for the rest of your life, however, you are breathing all the time.