this is "nightline." >> tonight, this guy jets all over the world, basically for free. >> last year alone i earned over 1 million frequent flyer miles sitting on my couch. >> now he's sharing his summer travel secrets and accepting our challenge. can he fly round trip, first class, to sunny florida for a nice lunch? and pay almost nothing? plus this child healer has believers flocking from all over the world. just for a touch. a booming business of miracle workers raking in big bucks, offering to save bodies, and even souls. but are they preying on the faithful? and heat wave. after joe manganelo's the

hottest bachelor. we know he had the moves on "magic mike." but first the "nightline" 5. >> number one in just 60 seconds. ♪watching everybody eating ♪what they want all day ♪oh this tasteless cardboard ♪brings me nothing but more shame ♪ ♪turning every turn until i find something right♪

♪and it...takes my breath away you're about to meet a man who travels all over the world,

often first class, and almost always for free. and he says anyone can do it. so how can you take that summer trip for next to nothing? listen up, here's abc's rebecca jarvis. >> reporter: how would you like to take a summer vacation to hawaii for just $5? or what about flying first class to paris on a free flight? sound too good to be true? greg podway calls himself a travel hacker and says he hasn't paid for a flight in three years. today he's agreed to show "nightline" how he does it. >> it's being able to say, there's powder in colorado this weekend, let's go skiing, done. >> reporter: as millions of americans hit the road and sky this summer, we invited bryce to a travel challenge. 12 hours to fly himself to a destination of our choosing. can he get himself to ft. lauderdale, florida, have lunch on the beach, and get back for

absolutely nothing? and along the way, he agreed to show us his secrets. so what exactly is travel hacking? >> travel hacking is a method of earning a lot of frequent flyer miles through things like credit card signups and special promotions and using those miles to book really cheap trips. >> reporter: for many earning free travel requires racking up frequent flyer miles the old-fashioned way, by flying. but for bryce, that's for suckers. bryce does all this by signing up for credit cards that come with large rewards. as well as seeking out little-known offers. bryce told us united airlines publishes their last-minute deals on monday for travel the following weekend. last week, we spotted a weekend trip to new york from greensboro, north carolina, at an 88% dispoint. >> nice to meet you. how much would this normally cost? >> to rent a car to take three people to the airport? 60 bucks, 70 bucks, maybe. i wouldn't know because i don't do it too often.

>> reporter: a $70 private car, totally free. bryce tells us he scores $30 credit every time a friend or family member signs up for the service using his referral code online. >> hi, how are you? thank you so much. are you the guy who's asking your friends to punch in codes all the time? >> i am, i am. i'm shameless when it comes to that. >> reporter: at the airport these frequent flyers navigate past huge crowds by signing up for the delta skymiles card, bryce gets priority access and free checked bags. more savings, $45. destination? ft. lauderdale, florida. in this first class cabin we found passengers paying $500, $600, $1,000 for tickets. >> my ticket was $550. >> my ticket was literally free. so was my breakfast. >> reporter: using this new barclays card, bryce was able to redeem 40,000 miles for a round-trip ticket in first class on delta, a savings of $570.

>> last year alone i earned over 1 million frequent flyer miles sitting on my couch. >> reporter: bryce says it's not about being rich. >> it's not something exclusive to higher incomes either. as long as you have a decent credit score and can manage that and stay on top of it, anyone can do it. >> his secret, credit cards. >> i have 23 credit cards. >> 23? >> 23, yeah. >> reporter: what financial effect do all those cards have? his credit score actually increased after signing up for the cards. >> it's not that having 50 credit cards is in and of itself a bad thing. but of course you want to be responsible with those cards. you could lose your job or you could just have a bad day and want to shop. if you've got access to all this credit, that can be a pretty dangerous situation. >> reporter: bryce says the best cards for earning miles come with a big signup bonus. enough to help you kick start your travel plans. he recommends chase sapphire preferred with 40,000 points. and this southwest airlines visa

with 50,000 points. we soon trade those cloudy skies of new york for the sunny beaches of florida. while our trip was just a day, if you're looking to spend the night, bryce says check out airbnb or craigslist with great lodging deals that often undercut hotels during the busy summer travel season. >> we made it, a quick trip. >> we're here and it's all free. for you. >> it is all free, yes. >> we're looking for a table for two. >> come on in. >> actually, make it three. >> reporter: at lunch, bryce finds ways to score even more miles. how does the venue look? >> pretty good. >> are you really thinking about what's on the menu? are you thinking about the points? >> i'm always thinking about the points. first of all, when you pay for anything with a credit card you earn rewards points. then they have dining clubs that you can sign up and register your credit card to, turn points above and beyond what you'd normally earn. i looked it up. this cafe we're in is a member of the united mileage plus dining program. >> the oasis cafe in ft.

lauderdale? >> you'd be surprised how many of them are in there. >> reporter: because bryce signed up on rewardsnetwork.com, he was able to score a bonus of 170 miles. if he dines out three times a week, he'll score an extra round-trip ticket in just one year. it never stops? >> it never stops and that's how you're able to take trips to ft. lauderdale for free just for lunch. >> reporter: travel experts say all these perks may soon become a thing of the past. how much are frequent flyer miles changing? >> they're changing a lot. in the last year or so, airlines have really started tweaking with their frequent flyer programs and they've devalued the miles across the board. >> reporter: just this year, delta announced it would be changing its entire program. instead of earning miles by how far you fly, delta will be rewarding based on how much you spend. >> it really prioritizes people that are spending money on business and first class tickets, not so much those of us that are sitting in the back of the plane. >> reporter: frequent flyer like bryce say there will always be ways to game the system.

and it is a competition, after all. so what is the final total? my travel costs $650 for airfare and $90 for the rental car. a total of $740. across the board, bryce was able to get his trip for a steal. the private car was free through credit. his airfare cost nothing by using 40,000 miles. all bryce paid were taxes and fees, totaling $35. a savings of $710. so you're doing all this work. >> that's right. >> why not just put money down every now and then? >> as you saw when we talked to the folks at the airport, they paid about $1,000 each to come here. we were able to fly to ft. lauderdale, just for lunch, just to put our feet in the sand. >> i can't imagine this not being worth it. >> this would have been worth $1,000. the fact that we're here for free makes it that much better. >> it feels like a race against time to get these miles. >> get the miles now and also use them now.

because everything is going to be changing in the next few years. >> reporter: and bryce is certainly taking that advice. a few days after our travel challenge, bryce sent these photos celebrating his honeymoon in hawaii. total air care fost? $20. i'm rebecca jarvis in ft. lauderdale, florida. next, they claim to be miracle workers. but are they promising the impossible? ♪ ♪ fill their bowl with the meaty tastes they're looking for, with friskies grillers. tender meaty pieces and crunchy bites. in delicious chicken, beef, turkey, and garden veggie flavors. friskies grillers.

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when doctors say there's

little they can do to cure major wounds or even disease, many are now flocking to a very different kind of healer. one who cures not with medicine, but with touch. faith healers. many of them children. raking in big bucks for a dose of hope. here's abc's marianna ve sometime zoeller. >> reporter: faith can be intoxicating. it can fill the sick and suffering with an improbable hope that a 10-year-old will heal them with a simple touch. aleni santos, better known as the little missionary, has been drawing believers to her dad's church since the tender age of 3. including daniel nesak, who was shot in the head during a war halfway around the world, leaving the left side of his

body partially paralyzed. after years of painful operations and therapy, daniel is desperate for a miracle. so he traveled halfway across the world to brazil where child healers are only part of a growing chorus of self-anointed miracle workers. fueling an explosive spiritual movement 44 million followers strong. evangelical christianity is the fastest-growing religion in brazil. and it's seriously threatening the catholic church's historical dominance in the country. but with millions of souls and millions in donations at stake, critics say many bogus merchants of faith are turning huge profits with false promises.

pastor eduardo is apparently a man of many talents. he won't just exorcise your inner demons, he also offers couples counseling. and even chiropractic care. i asked him if he thinks the catholic church can compete with his brand of christianity. and it turns out that gift is the only qualification he actually needs. anyone can become a pastor? >> anyone can become a pastor. >> anyone can open a church? >> can open a church. >> reporter: the professor studies the business of of

churches in brazil. he explains that enterprising evangelical pastors benefit from its total lack of regulation, and he says that many pastors lure new worshippers with visions of prosperity and health. at pastor aruda's church, no matter how shameless the pit pitch -- believers line up to grease his palms with an offering. and in return he greases theirs with a splash of his own special holy oil. members of these evangelical churches typically hand over 10% to 30% of their salary, not including offerings at mass. >> it's a very informal business. because the money just goes directly from the wallets of the member to the wallets of the pastor of the church. >> so there's no control over the money? >> there's no control over the money. >> reporter: he says that's made salvation a booming business.

and nowhere is the growth more apparent than in this city. this is the main street here in this neighborhood, and we've been here about five minutes. we've seen over ten churches. by some estimates the city has more churches per square mile than anywhere necessarily latin america. with this much competition everybody's trying to find a gillic to stand out. it's here we first meet aleni, the city's most popular child healer. this is her dad, pastor adelta santos. do you think there are a lot of people that are skeptical about this, they think it's not possible that a 10-year-old, through her touch or her words, is able to be curing diseases like cancer and aids? he tells me critics will never believe. seeing it is simply not enough. he says the moment a person receives the healing, they'll start to believe. and for years, those believers

have knocked to his church with terminal conditions. but none, he says, are too severe for aleni. she's become a local celebrity here. appearing on talk shows with her dad. he even hosts an internet radio show with listeners from around the globe. what do you feel when you're curing people? [ speaking foreign language ] >> reporter: at church aleni's dad warms up the crowd. as daniel, the partially paralyzed gunshot victim, waits by anxiously. [ speaking foreign language ] >> reporter: and after receiving donations, he calls the ill and suffering to the front. for daniel, this is the end of a long odyssey that began in a croatian war zone. [ speaking foreign language ]

>> reporter: and with that aleni works the line as she has hundreds of times before. all in perfect sync. as pastor santos tests aleni's miracle, daniel seems to be surrounded by success. then he asks daniel to grip the mike stand with his paralyzed hand. his hand never opens. afterwards, daniel isn't disappointed. how do you feel now? >> i feel okay. i feel good. i feel warm at heart.

i think i tried to open my heart. >> did anything change in you physically? are you able to -- >> i have -- no, i think it didn't change physically much. >> reporter: he's not the only one with mixed results. that woman who miraculously walked? only moments later, limping in pain. a lot of the people that came here today truly believed they were going to leave this store, leave the church, and be completely cured, yet that was not the case. the pastor tells me even though many are cured instantly, others experience gradual results. so you don't think you're giving people false hope or false promise in this. >> no. >> reporter: he tells me no, this is about faith, and he doesn't expect everyone to believe. but daniel for one is still holding out hope for a full recovery.

for "nightline," i'm marianna van zollen. ever wonder what it's like to date people magazine's hottest bachelor? newly crowned joe manganello reveals how he woulds the ladies. you've reached the age where you've learned a thing or two. this is the age of knowing what you're made of. so why let erectile dysfunction get in your way? 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

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"feed frenzy." >> newsstands got glassed with a summer heat wave today with "people" magazine's annual hottest bachelor issue. from that face to those muffles. you may recognize 37-year-old actor joe manganiello as the werewolf from "true blood." >> come on, you'll do anything for me. >> well, not that. >> yes, you will. you're in love with me. >> you may have seen even more of him as a stripper in "magic mike." he opens up about his dating strategy in "people's" behind the scenes interview on their website. >> feel safe, feel comfortable, i think that's a guy's job. >> and his romantic strengths. >> you're going to laugh a lot, have a lot of fun. >> laugh, cry or just stare. we had to ask. does all the attention make this bachelor feel, well, objectified? >> there's no such thing as male objectify case. because men don't care why you like them as long as you do.

>> really? is that true? thanks for watching abc news. "world news now" is coming up soon with overnight breaking news. tune into "good morning america" tomorrow. as always we're online at abcnews.com. good night.

♪watching everybody eating ♪what they want all day ♪oh this tasteless cardboard ♪brings me nothing but more shame ♪ ♪turning every turn until i find something right♪ ♪and it...takes my breath away