First, let's get to our inspiring special report, "erase the weight." If you ever thought that slimming down to your ideal weight would take you forever, meet edwin valez. He did that in a remarkable... See More
First, let's get to our inspiring special report, "erase the weight." If you ever thought that slimming down to your ideal weight would take you forever, meet edwin valez. He did that in a remarkable four months. All with a simple diet and an exercise program. Look at his plan. I've always been the bigger guy in every situation. The older I got, the more self-conscious I became about my Food was my go-to. Stress, school. I would eat and sleep was my weakness. After cruising to the bahamas with friends, I looked at pictures. I hit the max I've ever been. I was close to 300 pounds. I knew I had to do something about it. I woke up one morning. I was like, I'm going to do this. I'm going to do it now. First week, I walked just 45 minutes. Tried to pick up the pace a little bit. When my breathing got hard, slowed it up. In march, I ran my first 5k. I ran three miles every day. Now, we go out to eat all the time with friends. It's normal for me to choose something healthy off the menu. It was out of control. You have to dedicate yourself. Dedicate, determination, and you will not disappoint. You can make that possible. All right. We spin our magic scale to see how much weight he lost. He lost 140 pounds in just 4 months. Let's bring out edwin now. Wow. Come on over, edwin. Come on over. Take a seat. You look fantastic. Congratuons. What made you decide to do this? You said you actually saw some pictures of yourself after a vacation. And that was your revelation. Yeah. Me and some friends went to the bahamas. On the way back, we were like, let's look at the pictures. I saw myself. And I was like, I have to get my weight under control. What changes did you make? I did a complete change in what I ate. And I started exercising. I'm incorporating a lot of cardio into my routine. You eliminated a lot of white carbs. If it's white, I didn't eat it. No potatoes, no bread, no pasta. Did you eat multigrain? In the beginning, no. Now, I eat whole grains, low-carb pasta. Were you counting calories? Portion sizes, too. I went from eating a lot to eating a healthy-sized meal. And you said sugar was a temptation you had to give up. Snickers cars and reese's and that candy. You did cardio. You were running about three miles every day. You added to that weight training, which builds muscles. How quickly did you see the weight fall off of you? Around new year's, everybody was like, you're losing weight, aren't you? I'm trying. The first three weeks was about 15 pounds. After that, just motivated to keep going. What was your goal? I'm curious. The same group of friends that went on the trip in november, we planned a trip in march. I wanted to see a big difference from november to march. And it was 100 pounds. Your goal was to lose 100 pounds in those 4 months. But you actually lost more than that? Yeah. To this day, I've lost 140. You have said -- congratulations -- that your dream job was to be chris powell on "extreme makeover: Weight loss edition." We have a surprise for you. Here's chris. Chris, come on out. Edwin. Come here. We wanted to surprise you. Congratulations. Look at you. Oh, my gosh. Dude. Wow. Congratulations. Thank you. You are officially what we call a centurion. You lost over 100 pounds. You and you did it so fast, by yourself. Does it surprise you how quickly he did it? do on the show. With me on top of people, pushing them through it. You did it on your own. You did it by yourself. That's the magic in this whole thing. It's you. Does this mean anybody can do this just by making simple changes? Edwin woke up one morning and decided to stop eating white carbs and sugar and to start running. You just said the magic word. Simple, tiny changes. I'm listening to your story. You got out and you walked. Simple like that. Just get out and walk. Maybe a couple of tiny changes in your diet. And let your body change from there. You don't have to do all of the things at once, do you? It's a process. You have to start from the beginning and keep going. I USED MY THREE "Ds." Determination, dedication, with a lot of discipline. Discipline is key. And starting with being realistic. You just pointed out, chris, edwin, you started walking and then graduated to running and weight work. It wasn't like, let's do a marathon today. I'm running about 5k in 20 minutes now. When I started back two years ago, 48 minutes, almost crawling the 5k. I'm scared to run with you. That says a lot. Edwin, congratulations on your weight loss. You look amazing. You're gunning for my job, huh? That's my dream job. Go ahead to motivate me to drop and give you ten. Drop and give me ten. All right. One, two, three. Four, five, six. Seven, eight, nine, ten. Chris powell, thank you so much. You can get chris' new book, "choose to lose." It's on sale in stores now. Let's go to sam and his final check of the weather.
This transcript has been automatically generated and may not be 100% accurate.