I was wondering if you can tell me what weight the plates are that Cathe uses in her live classes? All she says is small, medium, or large but no weight. I have a wide variety of sizes for plates and a few look like the same size as Cathe's but I have no idea what weight she uses. I know it's up to me on what weight to use, but I do like to try and follow her in weight suggestions most of the time. Any info would be great.