Advise backache relief exercises/stretching?

Question

My friend hurt the back, while getting out of the bed abruptly.

Answer 1

visit a physical therapist. They can give you a long list of exercises to perform.

Answer 2

There is also the chance that trigger points (knots in the muscles) may not let the stretching work. If that is the case read The Trigger Point Therapy Workbook by Davies.