meet some moms who lost the baby weight at home during naptime. and find out why t25 is so much better than going to the gym. >> never again will i go to the gym and spend hours in there when i can get it done at home for 25 minutes and be done. >> announcer: we bet, by the end of this program, your living room will be your new gym, too. so don't change that channel. >> hi. remember me? my name's joe, and i'm an editor for beachbody. last year, i worked on the t25 infomercial, and when i saw the results people achieved working out just 25 minutes a day, i had to give it a shot. well, i lost 30 pounds with t25. and guess what. it's been over a year, and i've kept the weight off. hey, when your workout takes 25 minutes, it's hard to say "i don't have time." and in the past year, over a million people have tried t25. a million people. so i've been editing away, reviewing thousands of stories and "before" and "after" photos. the transformations are incredible. the people literally don't look like the same person in their "after" photos. check out aliy

. >> if you are watching at this hour, the last time you got seven hours of sleep was naptime in kindergarten>>> if you are still having trouble keeping your new year's resolutions, there's an app for that. just point, click and stay on track. >>> and in our next half hour -- can you really pay your way out of a hangover? find out what's in a special i.v. drip that promises to make you feel better. you're watching "world news now." >> announcer: "world news now" continues after this from our abc stations. now." >> announcer: "world news now" continues after this from our ♪ babies aren't fully developed until at least 39 weeks. a healthy baby is worth the wait. ♪ >>> welcome back. okay. so it is now 2015. the very year that marty mcfly visited showing us hoverboards and holograms. but while we may not have all of that yet, we do have technology that can make our lives easier and help us with those new year's resolutions. abc news tech contributor tina trinh is here with her top picks. >> hey, kendis. happy new year. >> happy new year. happy 2015. >> the most popular new year's resolution is st