Well, it's hard to know what she meant by "exercise." She probably meant it as a synonym for "calisthenics" which IS what Pilates is like, but the word "calisthenics" is almost never used anymore, so I could see using the generic "exercise" to mean the more specific "calisthenics." It's very possible that in her brain she was seeing this type of exercise but didn't have the word for it, so instead came across as clueless.
Sarah

