>> tonight on "nightline," exercise overload. this woman says exercising for three hours a day simply isn't enough. but when pushing limit is the name of the game, going too far can become very dangerous. it's been a wild road for american sweetheart drew barrymore from "e.t." to "playboy" and back down to earth. now the mom has no regrets. >> what if she says mom, i want to pose for "playboy." >> now a look at her latest chapter.

and baby nation. he can't even talk yet, but he can do this. would you let your infant hit the waves?

good evening. and thanks for joining us. lots of us exercise to get healthy or to get slimmer, but what if we tell you tonight there can be dangerous side effects. in some extreme circumstances, exercising can be hazardous to your health. high intensity training is a top fitness trend, but there's a line, and many are crossing it. here's abc's juju >> reporter: katherine schreiber says she's addicted to something post people would praise her for. she's been known to hit the gym

obsessi obsessively. >> this is my first love. >> two hours before work, an hour at lunch, another session after work. >> i don't stop because you're not worth [ bleep ] if you stop. you're worthless. >> katherine is a self-proclaimed exercise addict, but rather than make her happy, she thinks it's a curse. you know, when people don't know your back story, they look at your physique and say oh, i'm so jealous of her physique? >> absolutely. >> reporter: what would you say? >> it looks better than it feels. i'm so envious. it's not something to be envied. the psychological turmoil that drives me to do this, it's not fun and i don't wish it upon anybody. >> reporter: our country is in the grips of an obesity epidemic, which may explain the exponential growth of hyper intensive workouts that promise to help you slim down and bulk up quickly.

p90x, selling more than 4 million dvds. insanity? more than 2 million. crossfit, signing up 10 million cross fitters. >> over the past five years, i've definitely seen an increase in the number of people going for an excessive type of a workout. there's sort of this escalating of competition between people to be more extreme and to be more hard core. >> reporter: the desire for six-packed abs and chiselled biceps is driving people in droves to military boot camp training, hard core spinning, extreme endurance races. even yoga, usually a refuge of peace and tranquility. >> keep squeezing your thighs -- >> jimmy: now amped up to include those who love to be pushed to the edge. but extreme exercise has a dark side. what does it feel like when you don't work out? >> i get severely anxious. i get extremely irritable. i feel awful in my skin. i feel trapped in my skin. i'm rang pi. angry.

>> but it's counterintuitive. you exercise to get energy, but you exercise so much you lose energy? >> i'm completing myself. and i literally have not taken a day off in the gym in over two years. so no days off. yeah. even when i was sick. >> reporter: melissa elder is a trainer at equinox in manhattan. she says many clients are pushing themselves stronger than ever, and she thinks social media is to blame. >> you constantly have people showing images of themselves. people constantly see you and you want to impress, i guess. and you're judged by what you look like. people are more aware of how they look and more concerned with their workouts, i guess. >> reporter: wreaking havoc, not just on the mind but on the body. when you binge exercise, you're trying not to only negate every calorie you've taken in, but go beyond that so that you lose even more weight. >> reporter: katherine herniated a disc in her spine but ignored the pain. my understanding is that you didn't want to get it treated

because you knew that it would take you out of working out. >> yeah. several doctors recommended that i get surgery and i flat-out said no because that would mean, i think it was two or three weeks off the gym. and that was inconceivable to me. i thought, well, i'll modify my workout. i pushed through the pain. >> we do have those bikes. what if you went to the gym at 6:00. no, i have to go to the gym now. first in the morning or whatever time. and she needs that structure within the workout. it's compulsive. >> reporter: it's a familiar mantra. no pain, no gain. although increasingly popular, doctors say these kinds of hard core intensity workouts can cause serious health problems, like rabdomyolosis, a rare condition that can lead to kidney failure. >> this is when the muscle tissue is so damaged from exercising excessively that it dies. it releases a chemical into the blood that can be very damaging to the kidneys. >> which is what happened to

jill. >> during my workout, i didn't have any warning signs. >> she wound up in the e.r. days after doing intense crossfit exercise. swelling from her elbows to her shoulders. >> in some instances, if this isn't taken care of, this could kill you. >> reporter: in the past, crossfit says it doesn't teach trainers to push past their limits. >> go, go, go, go, go! these are desperate cries from tough mudder runners at an event last spring. one competitor drown and hundreds stood helpless as a rescue diver prepped to go after him. >> mask on, go down there! >> reporter: the 10 to 12-mile race course includes crawling through mud, under barbed wire, running through four-foot high flames and sprinting through a field of live wires. the 28-year-old's death was ruled an accidental drowning. shortly afterwards, they released a statement saying they take safety very seriously and test all obstacles prior to each

event and have a fully trained medical staff on site. but just how tough is too tough? >> if you're missing out on work events or social events because you want to work out. or if you're becoming anxious and depressed because you've missed a workout. or you're not taking any rest days and you're you're working you're sick or injured, these go beyond just being fit and the realm of addiction. >> tracy andersson, fitness guru to the stars says you have to know what you're doing. >> the truth is that it takes a lot of care and attention to achieve your best body. and it's possible, but it takes support. it takes education, and it takes people understanding that, you know, you are how you move and you do need to -- you do need to choose what you do carefully. >> i think the problem is somewhat cultural in the sense

that we don't really encourage moderation in a lot of things. especially with exercise. >> reporter: katherine has managed her obsessive exercising to under two hours a day on average, but she knows she has to be vigilant. carving out time for friends and for her other passion -- writing. >> when i'm writing, i just -- i'm in the zone, really. it's the only thing that trumps exercise for me. >> reporter: she says her various therapies are helping, but just today -- >> come on. >> reporter: she took delivery of something she hopes will help keep her from obsessing about going to the gym, an elliptical machine. but perhaps she's just bringing her asixths home. -- addictions home. >> i'm so excited about this right now. >> someone with a problem with obsessive exercising and others of us have to drag ourselves to the gym. thanks. next, would drew barrymore let her daughter follow in some of

her wilder footsteps? she tells us next. and what would you do if you saw this abandoned baby carriage on the street. would you think it might be the devil's due? ♪ [ alarm sound for malfunctioning printer ] [ male announcer ] you've reached the age where you've learned a thing or two. [ metal clanks ] ♪ this is the age of knowing what you're made of. so why let erectile dysfunction get in your way? [ gears whirring ] talk to your doctor about viagra. 20 million men already have. ask your doctor if your heart is healthy enough for sex. do not take viagra if you take nitrates for chest pain; it may cause an unsafe drop in blood pressure. side effects include headache, flushing, upset stomach, and abnormal vision. to avoid long-term injury, seek immediate medical help for an erection lasting more than four hours. stop taking viagra and call your doctor right away if you experience a sudden decrease or loss in vision or hearing. [ cellphone beeps ] this is the age of taking action. viagra. talk to your doctor. he knows every beat, every note,

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[dad] [lau [boy] mom!ughs] [mom] yes? [boy] whoa,whoa,whoa... [mom and dad] [laughing] [boy] whoa,whoa,whoa... [mom] you've got two left feet,boo.

/o /owe. drew barrymore comes from one of the most famous acting dynasties in hollywood. she's made headline for more than just her family or even her movies. now the expectant mother opens up about her unconventional upbringing and even more unusual choices and what she wants her daughters to learn from all of it. abc's amy robach sat down with her. >> our american sweetheart is back. wearing hearts at the golden globe this weekend. >> good evening. >> pregnant with her second child. >> yes, i am writing a heart next to my name. >> and a in uh book, drew barrymore is ready for her next act. >> i love the very exposed, humorous, imperfect, never trying to tre tend to be perfect journey that i've been on in my life.

>> that journey has been turbulent and often very public. >> e.t. phone home. >> steven spielberg's "e.t." catapulted drew barrymore to international stardom. >> your movie is up for an academy award. what do you think about it? >> i don't know if we will win, but i'm hoping so much. >> then a crash that so many child stars have taken since, but at the time was shocking. by 13, barrymore had been to rehab for alcohol and drug abuse and written a best seller about it. and she attempted suicide and later became emancipated from her parents. and by 19, publicly explored her sexuality in "interview" magazine posed for "playboy," and got her first divorce. >> is there anything you look back at and you just kind of cringe? >> no. and i celebrate that i had any sense of freedoms at a certain

point because i don't feel like that now. >> reporter: these days she's a proclaimed actor and director. her demon and bad girl reputation, a lifetime ago. >> that person seems like a beautiful, distant, unattainable memory. and i know it's still me and i'm so glad that it was, because it was such a fun part of the steppingstones. and i never have to worry that, like, i didn't get anything out of my system. >> barrymore's latest role is mom. she and her husband, an art consultant, are expecting their second daughter. >> so you're six months pregnant. >> yes. >> and your little one is about a year and a half. >> i will never complain for as long as i live, because i know how blessed you are to even make babies. i can't believe i get to make healthy babies. i could cry talking about it. so i'm just like, here we go. >> reporter: but in an age when everyone's past is a click away -- >> will you tell your kids about the good, the bad and the ugly? >> the best kind of parent you

can be is to lead by example. and whatever i've experienced in my life is a part of my story, and i'm proud of this. but it's someone who wakes up early, works all day, believes in charitable work, business minded, diligent, accountable, problem solving. >> very different childhood from the one she had. >> i'm so much about school and consistency and tradition. >> reporter: what do you think that comes from? >> i have no idea. i don't know where my business sense comes from. my parents were hippies. >> reporter: that work ethic and business acumen have helped create a business empire. she has a production company, flower films, making hits like "donnie darko" and one she started in, "charlie's angels." and "50 first dates." >> are you okay? >> isle be right back. >> hey, come here! >> i think he's had enough. >> reporter: there's barrymore wines, a line of makeup, flower

beauty, and now a new book that's close to her heart. >> photography calms me and it stops me and it wows me. >> reporter: barrymore released "find it in everything" a collection of photographs of heart shapes that she's spotted and snapped over the past 20 years. >> i loved this shape so much, i would see it in a fragment of light, i would see it in i fur of my dog. it would suddenly unexpectedly have something heart shaped about it and it made me happy. >> this was the most wopdnderfu afternoon. >> that's charlotte gainsburg. she's so cool. i felt like such a nerd shooting her because she's so cool. >> reporter: she gave "nightline" an exclusive first look at her portfolio and of her personal pictures. your human eyes don't see this.

they don't capture the world like this, but photograph y does. i love moments like that. >> reporter: when you look at your work, do you say, i have real talent? >> no. but if you would ever think i do, i'm stumped. i was like -- >> reporter: what does this mom and aspiring role model say when she looks back at her "playboy" moods? >> i have no regrets at all. i'm just in a different mind frame. i'm in mom mode now. i can't even think about it. >> what if your daughter comes to you at 18 or 19 and says mom, i would to pose in "playboy." >> i would not let her. i would influence her not to because my life choices are not supposed to be the gateway to somebody else's. that's my journey. >> reporter: a journey with no apologies. >> find it in everything,

photographs by drew barrymore is available in bookstores now. next, what's inside this stroller? could it be the devil's due? ♪ driving rock music music stops ♪ music resumes ♪ music stops ♪ music resumes ♪ ♪ [announcer] if your dog can dream it, [whistle] purina pro plan can help him achieve it. nutrition that performs. i nethat's my geico digital insurance id card - gots all my pertinents on it and such. works for me. turn to the camera. ah, actually i think my eyes might ha... next! digital insurance id cards. just a tap away on the geico app. could save you fifteen percent or more on car insurance. everybody knows that. well, did you know that when a tree falls in the forest

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[ mom ] still counting. ♪ more than a feeling ♪ when i hear that old song they used to play ♪ ♪ more than a feeling [ female announcer ] yoplait light boston cream pie. at 90 calories it is so good when you want more than a feeling. >> scary, steady and soaring babies on tonight's "feed fre y frenzy."

most parents like to brag ability their baby's first steps. but how about baby's first time getting up on water skis? 7 1/2-month-old ryder comes from a pretty sporty family who taught him to ski with help. their video went viral and fast. it even caught the attention of the australian water city champion who invited him on his boat for a real ride including a custom wet suit. now a different kind of remarkable. a plane ride can create stressful situations so michelle was nervous when she saw a businessman would be sitting next to her 3-year-old daughter kate from a flight back from disneyworld. he turned out to be a very special seat mate. spending much of the flight connecting with the little girl who can have trouble communicating. >> it didn't matter to him that he couldn't have a back and

forth or he couldn't ask her her name or age or ask what the name of her turtles were. >> he was even able to help calm kate when she became agitated as the plane descended. >> you never really know who you're sitting next to or what it means and an act of kindness. >> eric kunkle did more than just put a smile on kate's face. with the story getting 70,000 facebook likes, h ehelped raise awareness about autism as well. not all babies are cute. imagine you're walking down the street when a lonely stroller catches your eyes. you look a little closer. is there an abandoned baby inside? no, it's an animatronic devil baby. the work of some mischievous minds behind "devil's due" hitting theatres this weekend. now that's advertising with a little life of its own.

well, i guess there really is such thing as an ugly baby. and now a look ahead to a shocking investigation on tomorrow night's show with abc's byron pitts. a. >> at first glance, this 22-year-old is a country music lo loving, church going, have a beer with his buddies kid who just graduated college. but beware. beneath the big smile and folksy charm is a young man who's been called the future of organized hate in america. >> fascist, fascist, anti-gay. >> you say people of color, jews are predators? >> disproportionately. >> jews have a monopoly on suffering it seems. they deserve a short drop with a tight rope around their neck. >> should we ask the immigrants to go home? >> you consider yourself a

racist? >> sure. so what? i call it natural. >> being a racist is natural. loving one's people is natural. >> wow. white supremist, the young and the racist. thanks for watching. "world news now" is coming up with overnight breaking news. as always, we're online at abc news.com. good night. you've got to try this sweet & sour chicken helper. i didn't know they made chicken. crunchy taco or four cheese lasagna? can i get another one of those actually? [ superfan ] hey, america, we're here to help. ♪ this is the creamy chicken corn chowder. i mean, look at it. so indulgent. did i tell you i am on the... [ both ] chicken pot pie diet! me too!

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