Factors that could hamper effective communication would be staying in the past, talking only about one aspect of the situation, not being prepared to think about a situation in a new light, not considering all the possibilities which might help in a current situation, and many others. These were just five ones which are highly harmful when one wants to be effective in communication.
An extended amount of time
1. stay hydrated drink lots of water
2. eat healthy
The placenta via the umbilical vein.