Are Front Bending Exercises Safe While Having L4-L5 Disc Problem?

Sir I am bhaskar calling from vizag I am having L4L5 disc problem diagnised in the year 2006 through MRI Shall I do front bending exercises like suryanamaskarams (Yoga) in the early days (2006) I could not do such exericses but my body is supporting now. Shall i do not again MRI is required to know present stage or not