Keep your knees in line with your feet. Focus on using your lower abs to raise your knees. Lie down on your back on the floor or on a gym mat and then extend your arms behind your head.Everyone wants […]
Keep your knees in line with your feet. Focus on using your lower abs to raise your knees. Lie down on your back on the floor or on a gym mat and then extend your arms behind your head.Everyone wants […]