Why do some people nurse just on one side per feeding? What are the benifits to this? Does it ensure that the baby receives the hindmilk? My son is only 4 weeks old, so I am still learning. I feed him from both sides at each feeding. He nurses for about 10 min. on each side. I let him decide when he is done on each side. We had issues of weight gain the first few weeks and I guess I am just paranoid that he isn't getting the hindmilk. Thanks in advance for any info!