The shocking video raised one big question: Can you actually have a six-pack on your back?

The back consists of large, complex muscles that support your trunk and spine. There are many types of back muscles, and they are all essential, helping you walk, bend, twist, and hold your body ...

Stop obsessing over the mirror muscles and discover why a powerful posterior chain is the secret to a pain-free life and elite functional performance.

Add Yahoo as a preferred source to see more of our stories on Google. Woman with arms raised camera facing her back during back and biceps workout. Use these five dumbbell exercises to build your back ...