My husband and I watched this video at 1am with a crying newborn (as in 3 days old). We tried the techniques from Dr. Karp that night and they helped calm our little one down. It took us a few tries and we're still learning how to swaddle but they worked for us. I had previously read the book Happiest Baby on the Block but seeing the techniques practiced on real crying, wiggling babies in the video taught us how to apply the 5 S's in a way you can't learn from a book. Great stuff!