Bladder Sediment and Stones

Nov 1, 2015, I ended my gym membership and focused my energies on preparing to move.  The move happened in February, 2016, and within a few months I began passing bladder stones, mostly small ones that look a lot like sand but a few measured as large as 1/4 inch.  I doubt my catheter would pass anything larger.  Even though I know stones are associated with being sedentary I did not think of myself as that, so did not put these 2 things together in my mind until about 6 weeks ago when I went back doing regular exercise on the floor.  During all the intervening time my active hours were using my exercise bike and doing dishes (standing) at the sink. 

My floor exercises consist of things I do on my belly, side laying, or doing "bridges" on my back.   Otherwise in my life I do not use those positions, even to sleep. When I started back I immediately experienced very cloudy urine right after the floor exercise time, then passed a lot of stones for the next 12 hours or so.  At this point I do not pass as much sand and stones, just "some", and the size of the stones has reduced.  My guess is that I am keeping the bladder generally cleaner and stones and sediment do not remain in the bladder so long, so the stones do not grow as large.  

Obviously, by SCI standards I'm fortunate to be able to get up and down off the floor, as well as to exercise there.  I could be wrong about my conclusions but they make good working theory.  Lastly, I've had more energy.  It is possible that less sediment means less bacteria, allowing the whole body to do a little better.  Of course, an equally good explanation would be that the systematic stretching I do on the floor stimulates my energy level.

I am curious about other people's experience with sediment and stones.  Please share!