Baby needs plenty of sleep. Baby that does not rest enough can be very cranky. As parents, you need to ensure that your baby gets enough sleep. Baby who receives not insufficent rest can be very cranky. You may notice that babies who don't sleep enough may not grow optimally. Children who are small in size are mostly due to lack of sleep when they were babies.
For more information on this topic, check out this article on "Baby Need Enough Sleep." Find out how long should you baby sleep. If you are hiring a nanny or a babysitter, you can teach them how to know if your child has enough sleep.