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Week 38: Baby develops a firm grasp. Thirty-eight weeks into your pregnancy, or 36 weeks after conception, your baby is developing a firm grasp. Your baby's toenails have reached the tips of his or her toes. His or her brain might weigh about 14 ounces (400 grams). After birth, your baby's brain will continue to grow.
Women get most of their growth during early adolescence, but men can get most of their height years later. In general, men will grow the most from the ages of 12 to 16. From the time that they are a baby the size of your arm to full-grown stature, men will grow up to seven feet during their life.