Study Reveals Passion for Exercise May Start in Womb

MORE THAN 80% OF CURRENT DEMOCRATIC SENATORS HAVE ENDORSED HILLARY CLINTON. A PERSON'S LOVE OF EXERCISE MAY START IN THE WOMB. ACCORDING TO THE BIOLOGY JOURNAL, EXERCISE DURING PREGNANCY CAN LEAD TO EXERCISE LOVING OFFSPRING. WE SPOKE WITH A PERSONAL TRAINER ABOUT THE FINDINGS AND WHAT TYPES OF EXERCISES. Reporter: WE'RE VERY CONNECTED. IF YOU ARE EVER FELT -- IF YOU HAVE EVER FELT LIKE YOU WANTED TO RUN, SCIENTISTS MAY HAVE FIGURED OUT THE REASON WHY. IF THE MOTHER IS RUNNING, MORE OXYGEN. THE BABY IS RUNNING ALONG WITH YOU. Reporter: THOSE WHO WORK OUT MAY BE STRONGLY INFLUENCED. I HAVE THREE CHILDREN AND I RAN THROUGH ALL OF MY PREGNANCIES AND ALL THREE OF MINE ARE VERY ATHLETIC. Reporter: RESEARCHERS FOCUSED ON MICE THAT THE STUDY. RESULTS SHOW THAT BABIES WITH MICE TO ACCESS TO RUNNING WELLS ARE MORE PHYSICALLY ACTIVE THAN ADULTS AND MORE LIKELY TO USE -- LOSE WEIGHT DURING EXERCISE PROGRAMS. CARDIO IS KEY. IT ALSO SUPPORTS YOU AND THE BABY. Reporter: THE TYPES OF EXERCISE PREGNANT WOMEN SHOES, CRITICAL. THE MOST IMPORTANT, STRENGTH TRAINING. YOU COULD DO BICEP CURLS. THAT'S A GREAT ONE. WITH BOTH FEET AND YOU ARE JUST GOING TO CARL. BEAUTIFUL WORK MAKING SURE YOUR ARMS STAY STRONG. YOUR SHOULDERS ARE BACK. THOSE ARE ALL SMALL MOVEMENTS