Health and fitness has become stylish in the apparel world, and yoga-product retailer lululemon athletica (NASDAQ: LULU) has taken full advantage of the popularity of athletic apparel. Having spent years regaining its reputation, Lululemon has recently given investors many signs of hope for steady improvement going forward. Coming into Wednesday’s fiscal third-quarter financial report, Lululemon investors had high expectations that the yoga retailer would be able to post double-digit percentage growth in key business metrics.