Now Playing: Celebrity trainer Jeanette Jenkins shares 7 exercises with no equipment needed
Now Playing: Schoolteacher tries out a workout and diet plan from Pink and Alicia Keys’ trainer
Now Playing: Ginger Zee unboxes treats from city in Michigan and guesses where they’re from
Now Playing: ‘GMA’ Hot List: Sally Field reflects on her relationship with Burt Reynolds
Now Playing: Duchess Meghan helps launch a cookbook for charity
Now Playing: Here’s how a cruise ship goes from nuts and bolts to glitz and glam
Now Playing: ‘Million Dollar Listing’ star Ryan Serhant shares secret to success
Now Playing: In case you missed it: Why we’ve been pronouncing Chrissy Teigen’s name all wrong!
Now Playing: Everything to know about the Emmy nominees before TV’s biggest night
Now Playing: Easy snacks inspired by Emmy nominees
Now Playing: Sara Haines’ hilarious advice to her younger self on getting married
Now Playing: How Aflac is raising awareness for childhood cancer
Now Playing: Tony Bennett and Diana Krall perform ‘Love is Here to Stay’ on ‘GMA’
Now Playing: Reese Witherspoon shares career advice she learned from ‘The Rock’
Now Playing: Reese Witherspoon talks new book, throwing ice cream at Meryl Streep
Now Playing: ‘Friends’ star Matthew Perry returns from the hospital after 3-month stay
Now Playing: Sally Field speaks out about her new memoir, ‘In Pieces’
Now Playing: Duchess Meghan Markle helps launch a cookbook for charity
Now Playing: Girl with 3D-printed hand throws 1st pitch at all 30 MLB ballparks
Now Playing: Woody Allen’s wife breaks her silence in explosive interview