My baby is very active in utero after I exercise. Is this OK?

Q: I'm 28 years old and in the final month of my pregnancy. I was recently swimming laps and noticed that my baby became very active for several minutes after I finished. Is this OK?

A: Rest assured that excessive fetal activity is not associated with any complications that could affect your baby's health. If, on the other hand, you were to perceive a decrease in fetal activity, you should immediately alert your doctor. Babies alternate between sleeping and wakeful states every day in utero. In the third trimester, a woman should feel her fetus kicking at least twice daily, a minimum of 10 times an hour. These kicks may all occur within several minutes, or they may be spaced over an entire hour. Monitoring your baby's movements this way is called a "kick count," and it's a wonderful way to assess her well-being.