Experts recommend about 30 minutes of tummy time each day for infants. Tummy time encourages fine and gross motor skills. Tummy time encourages babies to push up on their hands and arms which helps to develop strong shoulders, arms and hand muscles required for grasping and reaching.
According to the Pediatric Society babies should always sleep on their backs which reduces the risk of Sudden Infant Death Syndrome (SIDS). This can cause cranial disfiguration otherwise referred as flattening of the back of the skull. This is why it is so important for babies to receive supervised tummy time to encourage proper development and growth.