Can a New Marketing Campaign Bring Vitality Back to GNC?

<p></p><p>While health and wellness retailer GNC isn't as physically fit as it once was, a new ad campaign might help restore some vitality. In a lighthearted, self-deprecating spot from Havas New York that debuted earlier this month, GNC invited viewers to see the company in a different light by focusing on an asset more valuable...</p><p>