Setting up for Yoga Nidrā/ Non Sleep Deep Rest: Find a comfortable lying position. Blanket under the body if on a hard floor and blanket over the body because your body temperature can drop. It's best for your neck to be in line with the spine, so a folded up blanket or very minimal pillow under the head. If you have back sensitivity, support under the knees- rolled up towel, blanket or pillows- OR you can bend the knees and place soles of the feet to the floor. Anything that is uncomfortable to start may become more noticeable, so make yourself SUPREMELY comfortable.