nail color day after day? not me. new revlon top speed™ nail enamel. ol color with a built-in topcoat that sets in just 60 seconds. with revlon you can change your mind again, and again, and again. new revlon top speed™ nail enamel. >>> these girls are on a championship synchronized skating team. they practice matching everything, move for move with everybody else. and they practice -- >> you have to make sure you're counting right. you got to listen to the music. >> reporter: and they practice, on their own and as a group, hours and hours every week. >> it kind of takes over your life a little bit. >> reporter: if this makes you dizzy just to watch, imagine what it's like to try to get it right. >> there are lots of practices during the weekends and during the week. and we have to skate hard and practice a lot to be on the team. >> reporter: and some of these girls have been at it for years. >> it's like my life. it's a passion. once you do it, you can't stop. >> i think in figure skating, it's very lonely sometimes, cause you're just working on your o

nail color day after day? not me. new revlon top speed™ nail enamel. or with a built-in topcoat that sets in just 60 seconds. with revlon you can change your mind again, and again, and again. new revlon top speed™ nail enamel. >>> let's pump some iron here, come on! >> once upon a time, pumping iron was mostly a guy thing. but not these days. weight training is part of the picture for girls, too, especially girls who want to get in shape to compete in sports. >> they're just as into the fitness as the boys are. an athlete is an athlete in today's society, compared to boys, or just girls, athletes are athletes. >> the bigger, the faster, the stronger, is just as important for the girls as it is the boys. >> but as more girls get into weight training, their injuries increase. researchers at ohio state university found weight training injuries among teenage girls are up 143% since 1990. >> and their increase was much higher than the increase among males. >> so, the girls need to join the boys in making sure they train safely. and that starts with learning

new revlon top speed™ nail enamel. cool color with a built-in topcoat that sets in just 60 seconds. th revlon you can change your mind again, and again, and again. new revlon top speed™ nail enamel. >>> peter and caroline davis have been playing tennis since they were old enough to hold racquets. but it's not just their athletic ability that makes this brother and sister team special. they are using their love of tennis to help change lives halfway around the world. it all started with the coach, teza. he's from zambia, a country in southern africa with a lot of poverty. more than half the population lives on less than $2 a day. >> i know how some kids don't -- unfortunately do not have enough activities and, you know, i -- and when i go to zambia i try to teach them tennis and i know how important tennis is to them because it was important to me. >> one day teza showed peter and caroline a photograph that forever changed their lives. >> it was just, the only time in my life when really a picture was worth a thousand words. there was a line of kids and all of them were wearing shoes