Study 3 The premature infants low muscle tone and its immaturity also influence on the organization and the quality of movements, marked as neuro motor processes. These processes form the oral motor base supporting movement which involves the infant ability to establish vacuum. The hypothesis is that Oral Stimulation for a specific program in 5 minutes before the minimum 2 meals per. day for at least 14 days increases the preterm infant's ability to create intra oral vacuum and thus the power to transfer milk from the breast, thereby extending the number of days when the infant is exclusively breastfed.