Unsupported shoulderstand, hands behind back
Niralamba Sarvangasana with hands behind back
Lie on your back with your legs bent and feet flat on the floor. Bring your feet behind your head. Clasp your hands behind your back. Stretch your arms to make your body perpendicular to the floor. Press your hands against your back. Raise your straight feet perpendicular to the floor. Clasp your hands and lay them onto the mat behind your back.