Swaddling is a positive sleep association. A sleep association is something good your baby will associate with going to bed. Swaddling baby is a great wind-down routine because it helps baby know he’s about to take a nap or go to sleep. When it’s time for baby to go to bed, change his diaper, give him snuggles, and then swaddle.As you begin swaddling for every nap and bedtime, baby will understand what’s coming next. They’ll begin to naturally calm down and prepare themselves to sleep, and the more they sleep they more they want to sleep.