At week 25, Your baby weighs more than one and half pound, and about nine inches long .Just Later this week, blood vessels will also develop in your baby's lungs, bringing them one step closer to full maturity — and your baby is closer to taking her first breath; so is your baby's nostrils are developing too and will start to open this week.
Diet and exercise go hand in hand so keep in mind not to even miss one day of some sort of exercise in order for your pregnancy to be fruitful.