Skin-to-skin care or kangaroo care is the closest that comes to womb-like experience. This is practiced few hours after the delivery; if the mother is recovering from labour, the father can take over.
Babies who are fussy or colicky often calm down when they are cuddled. This is because they often miss that warmth and feeling of the womb. Your body warmth helps stabilize the body temperature of your child as well. Premature baby’s body temperature tends to fall due to lack of fat in their body, parents should be careful about this, and as a precautionary measure, you can spoon your baby or cuddle him in your arms.
Body warmth is a part of the mother-baby communication. More the baby is with you in your arm the more you get to know him, also sleeping with the baby a good way to bond and share your body warmth with your baby. Also staying close to your newborn is a good idea because this will help you understand what your baby wants.