We're now two months into the new year, and as a health and fitness ecommerce brand, we see continuing evidence that there's never been a better time to use Facebook advertising to connect with new customers and grow a business. That's because getting healthier or sticking to a specific diet or workout plan is one of the most popular new year's resolutions -- and because people in February are just now trying out those gym memberships, meal plan subscriptions and personal trainers they signed up for in January (in record numbers).