Uttanasana or Standing Forward Bend Pose gets its name from two Sanskrit words Uttana which means intense stretching and asana which means posture. Though it may take a bit of time to master, it is considered as an excellent asana for your back and hamstrings.
This article discusses the right way of doing Uttanasana. It also talks about the benefits of Uttanasana and precautions you should take while practising it.