To Darla O’Brien, owner of Designer Fitness and developer of the Motion Empowered System for fitness training, it’s all about her clients’ fitness results. “There is nothing more satisfying than working one-on-one with a person and seeing them flourish through exercise,” she says. Since founding her boutique fitness practice more than 20 years ago, her personal touch, extensive credentials, real-world experience, and undeniable results have made her a leader among professional personal trainers.