Derek Hough

Dancer, NYT Bestselling Author, Emmy Award Winner for Outstanding Choreography & Six-Time Champion of ABC's "Dancing with the Stars"

Mark Ballas

Dancing with the Stars Champion & Mental Health Activist

Laila Ali

Undefeated Four-Time World Champion Boxer & Lifestyle Expert; Heart Disease Awareness Advocate

Devin Alexander

New York Times Bestselling Author, Celebrity Chef Known For "Biggest Loser"

Richard Simmons

Fitness Instructor, Actor, Video Producer Known for "Sweatin' to the Oldies" Aerobics Videos

Jillian Michaels

Leading Fitness Expert, Certified Nutritionist, Renowned Life Coach & Powerful Entrepreneur

Nia Long

NAACP Image Award-Winning Television & Film Actress, Philanthropist

Denise Austin

Fitness Expert, Author & Video Hall of Famer

Carnie Wilson

Singer & Actress, Founding Member of "Wilson Phillips"

Cat Cora

World-Renowned Chef, Author, Restaurateur, Contributing Editor, Television Host, Actress, Avid Philanthropist, Health and Fitness Expert & Lifestyle Entrepreneur

Dr. Lisa Masterson

OB/GYN, Mom, Philanthropist & Author; Known as Co-Host of "The Doctors"

Vilayanur Ramachandran

Neuroscientist; Director of the Center for Brain & Cognition, University of California, San Diego

Virginia Postrel

Author & Columnist; Writes on The Intersection of Commerce & Culture

Julianne Hough

Emmy Award Winner for Outstanding Choreography, Country Music Singer, Actress & Professional Dancer

Kris Jenner

Media Personality, Producer, & Entrepreneur; CEO of Jenner Communications; Known for "The Kardashians"

How Kris Jenner Made The Kardashians Famous, Rich And Insanely Influential

Antonio Damasio

Director of the Brain Institute

Randy Jackson

Music Producer, Former "American Idol" Judge, Author & Health Advocate

Morgan Fairchild

Actress and Advocate of Social and Humanitarian Causes

Brooke Burke

Former Host of "Dancing With The Stars", CEO of ModernMom.com & Thyroid Cancer Survivor

Ellen Gustafson

Co-Founder of Food Tank; Co-Founder of FEED Projects; Founder of 30 Project & ChangeDinner