http://www.exrx.net/Stretches/LatissimusDorsi/Bentover.html http://www.exrx.net/Stretches/ErectorSpinae/Lying.html http://www.exrx.net/WeightExercises/Erecto...alSuperman.html Three times each and hold for thirty seconds if you can. http://www.exrx.net/WeightExercises/Erecto...alSuperman.html Optional. Little bit of a further stretch, more for a minor core workout but it works. I have to stretch my hamstrings and lower back three times per day (plus post-workout) or else I can't walk. If you still feel super tight and it doesn't go away on it's own, it might be time to visit a therapist to give it a look. Seems helpful for a tall guy that is always cramped in planes too.