He keenly perceived and felt the activity of every muscle and bone in his body.,However, Darren thought to himself, his physical strength, explosive power, endurance, and bone density had already surpassed the standards of the Navy Six Styles. It was reasonable for him to master them easily.,The difficulty of practicing the Navy Six Styles is not low. Even some senior officers at headquarters can only master one or two styles, using these styles to help themselves break through certain limits of human potential.。