I'm really hoping Knot will chime in here. She has a couple of tricks in her bag that have really helped my SI joint (exercise type things that really sooth it). Mine has been crankier all winter from the cold - so I can only imagine that cold water might have the same effect. Core strengthening is key to mine not hurting.
You're right - it interferes with everything. Driving a stick shift for me is bad (when it's inflamed), as is laundry, dishes, etc., etc.
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