dr. julian bales, played by alec baldwin in "concussion," a neurosurgeon and one of the leading surgeons on traumatic brain injuries. >> sensors, smart helmets, having weekly hits is all important. hopefully technology is going to be a big part of solving this concussion issue in sports. >> reporter: many agree nothing can eliminate the risk of taking a big hit on the field. >> do you worry about facing one of these life-threatening injuries on the field? >> it's in the back of your head. if you get hit you might think, that could be something. but you have to keep playing. >> reporter: for "nightline," i'm ryan smith in pitsville, north carolina. >>> next, an abc news exclusive. barbara walters with donald trump and his family. the children telling us what life is really like with the you get used to smelly odors you think it smells jolly, [inhales] grunts but your guests disagree... music starts doesn't just mask, it eliminates odors you've gone noseblind to [inhales] mmm break out the febreze, [inhale + exhale mnemonic] welcome to the most social car we've ever designed. the 2015 niss

dr. julian bales played by alec baldwin say players like welker could place themselves at risk. >> i think everyone in his style of play has to be concerned. you really have to weigh the risk benefit of further participation. >> reporter: some imploring welker to hang up his cleats. >> i don't want him to play because of these concussions. this thing is no joke. >> reporter: but the nfl star telling "the st. louis post-dispatch" he's not at all worried hoping to suit up on sunday. the raps telling abc news their deers medically cleared him. he won't look for contact on the field, he says but not thinking about it either adding you start second-guessing yourself you start getting in trouble. >> we hope he's okay. >>> so much more ahead. new details in that murder mystery. an urgent manhunt for the killer who shot a young pastor's pregnant wife. a community and police searching for answers right now. >>> and caught on camera. a convenience store clerk rescuing the victim of a -- a kidnapper. how he shoe she was in trouble the moment they walked in the door. look, the wolf was huffing and puf

julian: dr. davis, thanks for being with us. angela: thank you. it has been a pleasure. julian: our pleasure. [captioning performed by the national captioning institute, which is responsible for its caption content and accuracy. visit ncicap.org] [captions copyright national cable satellite corp. 2015] click the youth asked me if a first lady should get paid. you can do anything you want to. -- it such agreat great opportunity to you are going to be criticized no matter what you do. i could have stayed in the white house and poured tea and had receptions and i would have been criticized. i got a lot of criticism. you learn to live with it. >> she was a husband's political partner in their campaign. she attended jimmy carter's cabinet meeting, even testifying before congress. their partnership on health and peace keeping issues has spanned four decades since leaving the white house. rosalynn carter tonight at 8:00 p.m. easton -- eastern. "first lady's." on the presidency from martha washington to michelle obama tonight at 8:00 p.m. eastern on american history tv on c-span3

dr. marcum has some answers. >> it was immediately clear that she was a very alert child. >> reporter: getting eva to everything. julian and her husband decided to hire a sleep coach. >> it helps them improve memory, it helps them learn and their environment. typically visits the home to see the sleep environment. out of that comes a custom tailored sleep plan. >> there are only a specific number of ways to change sleep behavior based on behavior modification and being consistent. >> reporter: the key to success is sticking to the plan. >> it was really helpful to have an expert tell you do this, do this, do this, do it at this time, do it at this way and then call me and we'll see how it went and we will adapt as necessary. >> reporter: they are usually used with children and deal with behavioral changes in life, but there are things adults can do. reconsider that glass of wine before bedtime. alcohol will help you get to sleep but it will be a restless sleep. also caffeine including chocolate is not good. set your clock for the same time ever day including weekends. put the glowing instruments away. >> reporter: for