New mothers tend to let their health improve while devoting all of their energy to the new baby . The mothers in the study consumed about 10 calories more per day than other women . For the mothers , less - and less - healthy diets add up to a higher BMI .
New mothers tend to let their health slip while devoting all of their time to the new baby . The mothers in the study averaged about 400 calories more per day than other women . For the mothers , less exercise and less-healthy diets added up to a higher BMI .