Penn State researchers say women with the mentality that they are "eating for two" are more likely to gain too much weight while they're pregnant.
The study from the Penn State College of Medicine looked at the attitudes and habits of women 29 women. Some gained appropriate weight and others exceeded the guidlines during pregnancy.
Researchers found those who gained the appropriate amount of weight stuck to a meal plan and chose foods carefully. They also exercised as much or more than they had before the pregnancy.
However, women who gained excessive weight described the experience as "eating for two." they had fewer goals and exercised less than usual during their pregnancy. They also made less healthy food choices and ate more as a result of cravings.