The New Way to Calm Crying and Help Your Newborn Sleep Longer. If you’re a new parent, you’ve likely experienced feeling helpless and frazzled as nothing you do seems to soothe your baby. Your poor baby cries and cries and you become frustrated and exhausted. Well, no longer do you need to feel this way. Dr. Harvey Karp reveals that there IS a remedy for colic. Throughout The Happiest Baby on the Block, Dr. Karp blends modern science and ancient wisdom to prove that newborns aren’t fully ready for the world in which they are born. Instead, Dr. Karp believes that the main reason babies cry is that they are born three months too soon, which he calls the missing Fourth Trimester. Understanding the basic principles of the fourth trimester is crucial for understanding babies as well as improving their sleep and soothing their senses. As you read, you’ll learn why babies love loud noises and vigorous movements, and how to trigger your baby’s calming reflex to become a master at soothing fussy babies.