. >> this baby this is little socra socrates.he weighs 17 pounds and it's a considerable amount of weight. >> somement movements you are doing are movements you do when you try to cheer the baby up anyways, ooh, and all that kind of stuff. >> mom said she gained 44 pounds during the course of her pregnancy and this is the way that she figured out how to get the majority of the weight off and spend quality time with her baby. >> it's not just moms doing workouts with babies and dads are getting into them, too, this dad is channeling his best inner arnold schwarzenegger. >> welcome to my biceps blasting video. use your baby's own body weight against your own biceps and you curl. >> as you can tell mom behind the camera is getting a huge kick out of this. and dad points out the baby seems to be having a good time, too. >> it's so funny. he's having a good time. >> okay. >>> it's one hot-looking car and -- >> they're also claiming it's the fastest car in the world. >> see just how fast it runs next. >>> and it's an app that could cha