As someone who exercises, I didn't think the comment was pedantic at all. I thought yours was actually. A lot of people define exercise as either some sort of

As someone who exercises, I didn't think the comment was pedantic at all. I thought yours was actually. A lot of people define exercise as either some sort of rigorous structured activity, or something that makes you sweat, or something that makes you huff and puff. A lot of resistance training my do none of those things, but still result in a high level of fitness, including cardiovascular. So, it was helpful to see what exactly the study was referring to. Conversely, a lot of people "exercise" regularly, but aren't particularly fit when measured against objective metrics.