http://www.webmd.com/baby/guide/healthy-weight-gain
It is not necessary to "eat for two" during pregnancy.
只需要每天多吃 100 to 300 more calories
正常体重:增加 25 to 35 pounds
比较轻的: 28-40 pounds
较重的: gain only 15-25 pounds
Where Does the Extra Weight Go During Pregnancy?
Baby 8 pounds
Placenta 2-3 pounds
Amniotic fluid 2-3 pounds
Breast tissue 2-3 pounds
Blood supply 4 pounds
Fat stores for delivery and breastfeeding 5-9 pounds
Uterus increase 2-5 pounds
Total 25 to 35 pounds
按上面,生完之后会立即减 12-14 lb