The OP in this thread linked to a personal weblog; the article there was a writer sharing her own personal experiences. Many posts in this thread do likewise, with people sharing their own opinions based on first-hand experiences with the garment in question.

The most useful response to a certain post before this one, I think, would be exactly such first-hand accounts of women who engage in high-impact activities and -- as one or more women inimitably put it -- "cannot leave your boobs at home." So here goes.

Bras I Hate and Love

3 Undergarments You Need To Know About

Sports Bras for Equestrians

yet another product