Build a strong, toned core with Andrea Metcalf's Core Power 10. Your core is a complicated muscular network. It's "core" to you accomplishing any everyday activity. Follow the voice and video cues for these 10 core, time and rep-based exercises. And, since TriadXP is mobile and guides you through the entire routine while tracking your results, there's no need to remember the routine plus you can do it at home, on vacation, anywhere, anytime.