becky worley has your plan and a really interesting hack just ahead.ahead. things than rheumatoid arthritis. before you and your rheumatologist move to another treatment, ask if xeljanz xr is right for you. xeljanz xr is a once-daily pill for adults with moderate to severe ra for whom methotrexate did not work well enough it can reduce pain, swelling and further joint damage, even without methotrexate. xeljanz xr can lower your ability to fight infections, including tuberculosis. serious, sometimes fatal infections, lymphoma and other cancers have happened. don't start xeljanz xr if you have an infection. tears in the stomach or intestines, low blood cell counts, and higher liver tests and cholesterol levels have happened. your doctor should perform blood tests before you start and while taking xeljanz xr, and monitor certain liver tests. tell your doctor if you were in a region where fungal infections are common and if you have had tb, hepatitis b or c, or are prone to infections. don't let another morning go by without talking to your rheumatologist

here's becky worley. wn upf clhing was ain intruc iwas a breakthroughlem.nd old school rash guard, no more. new technology added chemicals like zinc oxide. but how cool? >> let's get hot. >> reporter: we tried different colors and designs and fabrics with the upf rating of 40 or above. for each one i lay out for about ten minutes in the sun and cool down between shirts. we compared all the shirts, including this plain cotton shirt and it was definitely the hottest. i feel like i'm in a sauna right now. when we start in with the sun shirts, the temperature variations are extreme. this one close to the cotton at around 105 degrees. definitely sweating, can you tell? this one, significantly cooler at 88 degrees. much more room for air to get in here. and this sassy shirt was even vented in the back. breezy back there. even after a run, about 93 degrees, not bad. but the hands-down, coolest shirt was this white, super light technical shirt. it's remarkable how much cooler this shirt is. >> about 83 degrees. >> reporter: it was five degrees cooler than the next

becky worley with the experiment. >> reporter: summertime means screen time.he sergeants in phoenix, arizona, limiting screen time is a challenge. what's usage look like? >> an hour, two hours. >> reporter: mom and dad are exhausted by it. >> we're constantly trying to engage them. let's do this, let's go here. they are so addicted. >> reporter: we asked them to try something, giving their kids unlimited access for a week. do you think you'll get bored with screens? >> after a while. >> nope! >> reporter: we used this device from abc's parent company that you plug in and an app that tracks the kids' usage. on day one, the boys' hours are astronomical. wesley, nearly 12 hours. >> hey, wesley, you want some lunch, bud? >> no. >> reporter: and bedtime was shot. >> what time are you planning on going to bed? >> whatever time i fall asleep. >> reporter: all three kids watched a lot of videos and played games. mom noticed a definite shift in behavior. >> mom, make him stop annoying me. >> the kids spent seven hours on their computers, and -- five hours. this is anot

for "good morning america," becky worley, abc news, new york. >> style expert melissa garcia is herea, thank you so much for joining us. >> thanks for having me. >> we saw that whole program about sun protective clothing. is that enough to make you do away with the sunscreen? >> it can be. on the places that it's actually covering your body it is actually enough, surprisingly. it gives you an upf factor of 50 plus so you're actually really covered. and these days with sunscreen, you can forget to re-apply and it can be expensive. >> we'll show you some. we have three different clothing looks to show you all today starting with lola. come on out here. she's wearing beach wear. >> yes. >> how did we get this look? >> i love this because this things like your typical bathing suit but this has upf of over 50. what's great about this, you don't have to worry about it going through your clothing and getting you sun burned. what i also love is the swim leggings. they're another option. a little unexpected but gives you great coverage and a lot don't want to go to the beach in a swimsuit and

for "good morning america," becky worley, abc news, bodega bay, california. >> see, i would totally doing to happen. >> no? >> always wear your lifejacket. >> this is why i'll be on the couch today watching cat videos. >> just stay inside. >>> all right. coming up, from "the incredibles," to the thriller hitting theaters, the hottest movies. they're burning up the box office this holiday. whe we're right back. illegal. actually, you do. harmful bacteria lurk just below the gum line. crest gum detoxify works below the gum line to neutralize harmful plaque bacteria and help reverse early gum damage. and, now there's new crest gum & enamel repair. it gives you clinically proven healthier gums and helps repair and strengthen weakened enamel. gum detoxify and gum & enamel repair, from crest. gums are good, so is my check-up! crest. healthy, beautiful smiles for life. ...to give you the protein you need with less of the sugar you don't. i'll take that. [cheers] 30 grams of protein and 1 gram of sugar. new ensure max protein. in two great flavors. new ensure max protein. another anti-wrinkle

becky worley shows us how. >> reporter: running, it's great exercise, but -- ow. 65 million americansve to stop because of pain, like stephanie who's been sidelined for six months. >> so i've had a low back problem for a while. >> reporter: she's meeting with renowned orthopedic surgeon dr. kevin stone who's treated athletes and aging jocks as well. he's looking at her shoes. there's nothing structurally wrong, so what's she doing to cause pain? first culprit, molded inserts and fancy shoes that may not be right for her. next it turns out she runs all on pavement. our insider says diversify surfaces. >> the beach and the grass and trail running. >> reporter: he suggests barefoot running to strengthen the feet. >> and improving the ability of the foot to absorb force when you land. >> reporter: while stephanie's issues may be resolved with new techniques and gear, for many of us, it is structural. i've injured my knee in the past. >> what's the worse thing you can do? >> running through pain. running through pain is causing damage. >> reporter: but there are techniques dr. stone says c

one family, they tried it out and becky worley has the results. tablet for an hour, so then they'll spend the rest of the day, oh, climbing trees and playing with friends but then reality hits, it's only lunchtime. they've been on the device for five hours and you're yelling at them again to put it down. so our experiment with one family, if the parents didn't intervene for a week would the kids ever go out and enjoy summer? summertime means screen time and for the sergeants of phoenix, arizona, limiting screen time is a struggle with grayson, 10, wesley, 7 and lily, 4. on a day when there's no school, what's usage look like? >> ideally an hour or two hours. >> are you just going that keep watch hag. >> reporter: mom and dad are exhausted that. >> let's go here. they are so addicted they don't know how to come off them. >> reporter: we asked them to try something. giving their kids unlimited access to devices for a week. do you think you'll get bored with screens? >> after a while, probably. >> nope. >> reporter: we used this disney circle, a devic

millions trying to get fit, running is their go-to but can lead to sore this is and strains and becky worley like some people run effortlessly? is there some secret to running pain-free? i went to one of the top orthopedists in the country to find out. running, it's great exercise, but ow. 65 million americans run each year but many have to stop because of pain, like stephanie who has been sidelined for six months. >> so i've had a low back problem for awhile. >> reporter: she's meeting with renown orthopedic surgeon, dr. kevin stone who has treated thousands of professional athletes and aging jocks alike. dr. stone analyzes her walk, her running, even her shoes. >> we're going to start looking for the mechanical cause of your back pain. >> reporter: nothing structurally wrong so what is she doing to cause pain? first culprit, these molded inserts and fancy shoes that may not be right for her. >> a good detective to figure out what's causing it, this is the first thing. >> reporter: she runs all on pavement. our inside says diversify surfaces. >> except for the beach and grass and trail runn

our becky worley tried t >> reporter: summertime, working out, it's hot so i love the idea of shirtsemoval of moisture from the skin and keep you cool even in the most hot and humid conditions. but these shirts can be price. we picked three. $13, $30 and $70. so let's get sweating. >> come in, ladies. >> oh, my, it is hot. >> it is hot. >> reporter: barry drewit designs a pressure cooker of sim wlags. >> why don't i start on this crazy gizmo? ready? >> yep. >> let's go. >> reporter: cassie, megan and i will work out in this room where the temperature is set to 100 degrees and 32ol we'll first in a regular cotton t-shirt. bike. >> you can do it. >> reporter: cross training and bike again. after 21 minutes the sweat collected in our cotton shirts is weighed as a baseline then we cool down and change into the performance shirts. >> what we want to see is how much sweat these shirts team. >> reporter: these should wick away more sweat for evaporation but -- do i feel cooler? not really. i feel hot and sweaty. >> same for my workout partners. >> do you feel dramatically cooler? >> no. >>

becky worley is in new york with a look at some of the latest ways to keep those pests away. fly-swatter. but recently, my instagram feed with ads claiming products that can kill mosquitoes dead. high-tech to kill pests? really? >> whoa. >> reporter: gadgets to get rid of the world's most annoying pests? sign me up. but are these mosquito killers more buzz than bite? product review site wirecutter field-tested a few. >> there are some that sort of straddle the line in there that they work. there's a place for them but they are a little goofy. at zap because it's a fairly easy way to take little bugs and pests off of your plants. >> reporter: next up our little helpers try out the bug vacuum. >> kids do seem to enjoy it. >> there we go. >> reporter: and then the bugzooka, that also sucks up critters. >> it works really well. >> reporter: if you aren't into zapping or catching bugs what are your best repelling options? next we hit a backyard barbecue to find out what wirecutter recommends there. >> just something you'll want to wear, you can wear it on your belt while grilling.

becky worley has a closer look at the causes and some simple solutions. >> reporter: all the news abouteb hoffman. >> my pain wakes me pretty much throughout the whole night. >> reporter: she says her back has been bothering her for years. >> i don't sleep well so when i wake up i don't reel rested at all. >> reporter: at the end of her rope, she's been meeting with pain management specialist dr. houman danesh at mount sinai. he says back and other kinds of pain can feel more intense at bedtime. >> pain can be worse at night because you're not as distracted as you are during the day. when you lay down and not thinking about anything else your brain will perceive more of the pain signals coming through. >> reporter: dr. danesh says most pain while you sleep comes from two main areas, neck and shoulder, and back. >> for so many with neck and shoulder pain it's an easy fix. you just need a proper pillow. >> reporter: experts say the angle of the neck is critical to supporting aging joints while you sleep. if the pillow is too low, the neck the cranked. or for side sleepers, the shoulders c