[lo_zamoyski]

True, but statistics has nothing to do with correctness. Something done in excess, in either direction, is done in excess regardless of how many people do it.

The via media comes with difficulty as it requires reason and discernment, whereas extremes are easy and mindless, and people either under-exercise (the more common case) or over-exercise.

But historically, I would argue that we see more extreme "fitness" fads today than we did previously. Really dumb stuff that no longer has anything to do with health or fitness or beauty and more to do with some weird obsession.