High school girls are more likely to exercise vigorously if they're in girls-only physical-education classes that offer a variety of activities such as dancing, aerobics and brisk walking, a new study reports.

And they do better if the school in general promotes activities for girls, says the report in September's American Journal of Public Health.

Some skepticism preceded Stitch 'N Pitch, too. Kevin Martinez, the team's vice president of marketing, used to rib women colleagues in the M's office who'd knit during their lunch breaks. But then, in a moment of promotional enlightenment, he thought, Hey!

He figured on selling maybe 200 tickets for a knitting event. But more than a week before the game, ticket sales had topped 1,200, prompted, in part, by avid knitters who heard about the event at local yarn shops '” and who blog.

One blog entry on Mossy Cottage Knits read: "Take Me (and My Yarn and My Needles and My Pattern and My Friends) Out to the Ballgame." Immediately, feedback poured in to the blog: What a freaking kickass idea.