This isn't a 'help' question - more a point of curiosity - why do some women have more milk than they know what to do with, and others (like me) have to really struggle to get each ounce out. My cousin has just had a baby, and she has literally gallons of milk. I was really disciplined about feeding every 2-3 hours from the very beginning (starting when dd was 30 min old), and I have barely enough. I know the supply/demand mechanism, but why should it be so different right at the beginning? I never had the feeling of 'milk coming in' with either of my children. Is there a physiological reason for this?