I agree with this, I popped a disc a few years ago and keeping hamstrings loose really helps. I would add that be careful when the back is already aggregated as many hamstring stretches also stretch the lower back and if it's all inflamed and sore you make it worse stretching it.
Thanks for the suggestion, definitely a good one but not sure if this is where problem is for me in this instance. Hamstrings are reasonably loose - i can reach the floor in a forward bend when my back isn't locked up, but then again when my back goes, i can barely reach my knees.
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