Lying on your back (supine), extend and ground the legs and hips.
Press the elbows and forearms into the ground to lift the chest off the floor and take the head back to rest on the crown of the head.
While breathing here, keep the belly firm and the feet reaching away.
Form tips
For tighter upper back and neck, allow the head to float off the floor and focus on lifting the center of the chest straight up, using the arms pressing down as counter pressure.
The more you can lift the upper back, the more space you’ll have in the neck to take the head back.
Avoid hinging or hyperextending the neck as you take the head back.