With some data built up now on horse weight in California, was just wondering if anyone with access to the entire data set has been able to pick up any discernible impact factors (good or bad) relative to a certain amt of weight being gained or lost. And possibly needing to be correlated to distance/surface? (in certain route conditions, getting more "into shape" might actually be a good thing?)

Is there a "magic number" we should be watching for in the weight gained/lost area (as a % of weight, obviously, not absolute).