Karena Dawn

Co-Founder of Tone It Up & Personal Trainer

R5

Pop Rock Band Known for Songs Like "Loud" and "Pass Me By"

Partynextdoor

Rapper, Singer, Songwriter & Record Producer

Myles Kennedy

Musician and Singer-Songwriter Best Known as the Lead Vocalist and Rhythm Guitarist of Rock Band Alter Bridge

ILoveMakonnen

Hip Hop Recording Artist from Atlanta; Known for Singles Like "Tuesday"

Japandroids

Canadian Rock Duo Whose Latest Album is Entitled "Celebration Rock"

A Thousand Horses

Nashville Band Known for Singles Like "Smoke"

Jennifer Widerstrom

Newest Trainer on "The Biggest Loser;" Former Star of NBC’s "American Gladiators"

J. Richard Hackman

J. Richard Hackman is the Edgar Pierce Professor of Social and Organizational Psychology at Harvard University.

Ashlyn Harris

Goalkeeper for the U.S. Women's National Soccer Team; FIFA Women's World Cup Champion

Winnie Harlow

International Model, Vitiligo Spokesperson & "America's Next Top Model" Contestant

Dan Siegel

New York Times Best-Selling Author, Neuropsychiatrist, Mindsight Educator & Interpersonal Neurobiologist

Catherine Calarco

CMO & Senior Vice President of Sales and Marketing for HeartMath, LLC

Grimes

Canadian Producer, Artist, Musician & Singer-Songwriter Known for "Genesis"

Jeff Koons

Visual Artist & Sculptor

Jeff Koons explains some of his most famous works | 60 Minutes ...

Domhnall Gleeson

Irish Actor; Known for the "Harry Potter" Series and "About Time" Opposite Rachel McAdams. Stars in "Star Wars: Episode VII - The Force Awakens."

Raffaello D'Andrea

Entrepreneur, Engineer, Artist, Professor of Dynamic Systems and Control

St. Lucia

South African-Born Brooklyn-Based Musician; "All Eyes On You"

Sophie Tweed Simmons

Daughter of Shannon Tweed and Gene Simmons, Reality TV Star, Fashion Designer, and Model

Mickey Guyton

Country Musician, Famous for Her Debut Single, "Better Than You Left Me"