Mayim Bialik

Neuroscientist, Mental Health Advocate & Actress Known for "The Big Bang Theory"

Amandla Stenberg

Actor, Singer & Activist Known for "The Hate U Give," "The Hunger Games" & "Everything, Everything"

Bob Harper

Personal Trainer & Former Host of "The Biggest Loser;" Heart Attack Survivor

Maintaining A Healthy Body & Mind | Bob Harper Q&A

Jonathan Van Ness

Hair & Beauty Expert, Author, Television Personality; Known for Netflix's "Queer Eye"

Bethenny Frankel

Entrepreneur, Reality TV Star & Bestselling Author; Founder of Skinnygirl & BStrong Disaster Relief

Jameela Jamil

Actress, Outspoken Feminist, Mental Health & Body Positivity Advocate

Tunde Oyeneyin

Peloton Instructor & Makeup Artist; Founder of SPEAK Instagram Live Series

Michaela Jaé Rodriguez

Actress & Singer; Known for "Pose"; HIV Awareness Advocate

Anderson Cooper

Journalist, TV Personality, Anchor of CNN's "Anderson Cooper 360°"

Demi Lovato

Grammy Nominated Singer-Songwriter, Musician, Philanthropist & Mental Health Advocate

Tig Notaro

Grammy Award-Nominated Stand-Up Comic, Writer, Radio Contributor & Breast Cancer Survivor

Jessica Alba

Actress; Entrepreneur; Founder & CEO of The Honest Company

Yvonne Orji

Actress, Comedian & Writer Known for HBO's "Insecure"

Cynthia Nixon

Actress Known for her Role as Miranda Hobbes on HBO's "Sex and the City"; Former Candidate for Governor of New York

Amanda Seales

Poet, Spoken Word Artist & Media Personality Known for HBO's "Insecure;" Anti-Smoking Activist

Nina Garcia

Editor-In-Chief of Elle Magazine, Judge on "Project Runway;" Alzheimer's Awareness & Prevention Advocate

Meghan McCain

Political Columnist, Author & Award-Winning Blogger

Dan Abrams

Chief Legal Affairs Anchor at ABC News & Founder of Abrams Media

Mark Ruffalo

Actor, Director, Producer, Screenwriter & Environmental Activist

Luvvie Ajayi

New York Times Best-Selling Author, Podcast Host & Professional Troublemaker