Jessie Pavelka

Fitness Expert; Former Television Host on NBC’s "The Biggest Loser"

Kacy Catanzaro

Gymnast, First Woman to Qualify for Television Show "American Ninja Warrior"

Matt McGorry

Actor Known for "Orange is the New Black" & "How to Get Away with Murder;" Feminist & Social Change Advocate

Camila Alves

Model, Designer & Entrepreneur

Rachel Frederickson

Winner of "The Biggest Loser" Season 15

Tyler Lepley

Star of Tyler Perry's "The Haves and Have Nots" on OWN

Chrissy Teigen

Model, Author & Television Personality

Q Parker

Grammy Award-Winning Singer-Songwriter and Co-Founder of Multi-Platinum Group 112

Dave deBronkart

Kidney Cancer Survivor & Patient Advocate Known as "e-Patient Dave"

Larysa Didio

Celebrity consultant in nutrition and healthful living.

Lance Secretan

Top Leadership Speaker & Former CEO of a Fortune 200 company

Elizabeth Cohen

Senior Correspondent for the CNN Health, Medical, & Wellness Unit

Elizabeth Cohen - CNN news story on baby formula shortage

Tracy Anderson

Fitness Pioneer, Entrepreneur & Author, Founder of The Tracy Anderson Method

Tracy Anderson shares moves to work your whole body

Ellen Gustafson

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

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

Raj Patel

Award-Winning Writer, Food Politics Activist, Filmmaker & Academic

Alison Sweeney

Actress & TV Personality Known for "Days of Our Lives" & "The Biggest Loser"

J.D. Kleinke

Medical Economist, Former Healthcare Executive & Author; Thought Leader and Pioneer in Healthcare Informatics

Jenny Evans

Stress Resiliency Expert, Speaker & Author

Ethan Zohn

Winner of "Survivor" Africa, 2x Cancer Survivor, Stem Cell Transplant Recipient, Social Entrepreneur, Philanthropist, Cancer Research Advocate, Former Pro Soccer Player, Sports Broadcaster & TV Personality