a young man named marshall reed.st 10 years old, he took charge of the family's diet. and now, collectively, they've lost more than 70 pounds. they're in our studio. we're going to talk with them coming up about how they did it. they actually have a new book out to help other people. >> good for them. >> great story. and then coming up a little later this week, we've got a tough assignment. >> i know. i know. i'm so lucky. i mean, and the "today" show is sending me to cannes. i know i've been there once before. but we're going to go this time we've lined up some big stars because there are a the movies of course, we've got chris rock, just to name a few people we're getting to talk to. i feel very excited. we start that on wednesday morning. >> isn't cannes where you wrestled brad pitt to the ground one year? >> i pretty much did. i was totally inappropriate. i touched his face. i was having a girl molt. it's completely embarrassing. he forgave me. >> it was jet lag. >> i don't know. i think i just wanted -- i was --

marshall reed was just 10 years old when he watched the documentry "supersize me."he was tired of, bullied about his weight at school. >> one of my classmates actually told me, you know, you don't look very good. you're fat. >> reporter: his family ate out most nights and he could barely keep up with other kids at recess. he told his mom alexandra he wanted to get healthy now. >> i just went up to my mom and i'm like, i'm done. i'm not doing this anymore. i'm not putting up with this. i'm going to change myself. >> reporter: the announcement shocked his mother. >> i felt like somebody had thrown a brick at me. because, the amount of parental responsibility, just all of a sudden came washing down on me, was alarming. >> reporter: the two set out to find a solution. the result is a project they call portion size me. to begin the family made a commitment to shape up for 31 days, eating better. and exercising more. marshall's dad, dan, an army lieutenant colonel, was stationed in iraq when they began. to share the experience with him, they began posting videos about the

when marshall reed was just 10 years old he got tired of being bullied about his weight so he asked his try as a family to be healthy for just 31 days. >> two years later marshall is 36 pounds lighter -- >> you go, guy! >> he and his mom alexandra have co-authored a book called "portion size me." >> look at you two! >> welcome to both of you. >> it was pretty tough for you, huh, marshall? kids were pretty cruel? >> yeah. they were probably some of the meanest people i'd ever met. but it's surprising how much they've changed because i just had one of the kids ask when can i buy the book? i'm like that's a sweet victory because this is the kid that would bully me. >> it not only changed your life, it changed yours, too, your family's as well. >> the entire family. we went from eating out or eating something boxed almost every night to now we're in the kitchen, we're out shopping at farmer's markets together, we're preparing foods together and actually enjoying that time together. >> so what are we making for lunch that's so healthy and good? >> so today -- well, we are going to make just

when marshall reed was just 10 years old he got tired of being bullied about his weight so he asked hishis is the kid that would bully me. >> it not only changed your life, it changed yours, too, your family's as well. >> the entire family. we went from eating out or eating something boxed almost every night to now we're in the kitchen, we're out shopping at farmer's markets together, we're preparing foods together and actually enjoying that time together. >> so what are we making for lunch that's so healthy and good? >> so today -- well, we are going to make just cucumber rolled in ham. it is a really nice fresh easy -- >> take a piece of ham. >> yeah. you just take a piece of ham. >> very lean and thin slice. >> take cucumber, roll it right up. you have to add the ranch sauce. >> low calorie? >> just light ranch. just spread it on -- >> so no bread. >> you don't need the bread. you roll it up and eat it with your fingers. >> any kid can do this for themselves. >> bread's overrated. >> what were you eating before this? >> i would eat at school probably. they serve macaroni and cheese t