体重增加

The baby doubled its weight in a year.

那婴儿体重增加了倍。

It is possibile that reduced slumber affects the number of calories burned while at reast( basal metabolic rate) and translates into weight gain over time.

可能是不充足的睡眠导致本应该在睡眠程消耗的卡路里（热量）到了影响，因而导致体重增加。