Why Pillow Support Matters The human neck contains seven cervical vertebrae that support the head and allow movement. During sleep, poor support may place additional strain on the neck muscles and surrounding tissues. A pillow that is too high or too low may cause the head to tilt unnaturally. For some people, this can contribute to waking up with stiffness or discomfort. An ergono... https://www.accessnewswire.com/newsroom/en/consumer-and-retail-products/derila-ergo-pillow-reviews-ergonomic-memory-foam-pillows-for-neck-back-1036323