My bike is the best doctor I ever had. The more I ride, the better my back feels. I have a fairly aggressive position, about 10 cm drop, and that's a necessary and good thing for the back. Too upright is punishing on it. I've also done strength work at my gym about 8 months/year since 1978, doing whole body work with a particular focus on back work. That's been very helpful over the decades.
IMO back braces weaken the back and pave the way for more problems as we age.
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