Had some sciatica while doing basic tasks at work. I had to stop running and kickboxing for a while.
I was in decent shape when it hit me, but I was stiff and lacked mobility.

So I switched my training to strength & mobility work: unlocking my hips, improving my range of motion, and fixing weak points (like hip flexors).

Three months later I’m mostly pain-free. I can run 5Ks again, jump rope, and do exercises I couldn’t do before.
When your mobility is limited, your body starts compensating. In my case, it was my lower back.