Effectiveness is the capability of producing a desired result. When something is deemed effective, it means it has an intended or expected outcome, or produces a deep, vivid impression.
The average newborn sleeps about 16 hours a day, but some need much less sleep and some much more. Also, it's not uncommon for a newborn's sleep pattern to change from day to day; he may sleep substantially less than usual one day and then catch up by sleeping more the following day.
Baby sleep patterns vary depending on their age. Newborn. A newborn will sleep approximately 16 to 20 hours per day. The length of each sleep session is affected by whether your baby breastfeeds or formula feeds. Breastfed babies wake up every 2-3 hours, while formula fed newborns wake every 3-4 hours. A newborn's sleep cycle is very different from an adult's.