Newborns are born with a variety of temporary primitive reflexes. The cuddle reflex is one of the primitive reflexes in newborns. So how to check for a weakened or absent cuddle reflex in newborns? The newborn is placed in the supine position, the baby is lifted from the back, one hand holds the baby’s neck and back, the other hand holds the occiput, and then the hand dragging the occiput suddenly moves down a few centimeters (not letting go) so that the head and neck are tilted back a few centimeters. Normally, both upper extremities are seen to be abducted and straightened, with the fingers spread out, and then the upper extremities are flexed and retracted. Preterm infants often have an incomplete response, i.e., the upper extremities do not flex and retract. This reflex is evident in the first 3 months of life and disappears completely after 6 months of life. The absence of this reflex in the neonatal period indicates brain injury, and the lack of startle reflex in one upper limb suggests paralysis of the brachial plexus due to birth injury or other causes or clavicle fracture. The startle reflex may be delayed or disappear when there is an injury or acute lesion in the brain. If it can still be elicited after 4 months, it should be noticed9; its presence even after 4 months is characteristic of chronic lesions of the brain. Neurodevelopment is not just about the hug reflex, but mainly about the history of asphyxia and hypoxia, and the observation of future neurodevelopment, as well as other physiological reflexes such as the feeding reflex, sucking reflex, grip reflex, cross-extension reflex, trunk and neck correction reflex and flexor tone.