MrBeast's girlfriend showed him guzzling raw egg whites with chocolate syrup as part of his supposed productivity "grind"

• MrBeast's girlfriend, Thea Booysen, filmed him swigging egg whites and chocolate syrup.
• The YouTuber has been open about lifestyle habits he believes are required to be the most successful YouTuber in the world.
• He's also discussed living with Crohn's disease, which has necessitated a strict and repetitive diet.

Jimmy Donaldson, known to his legion of fans as MrBeast, has been open about the intense lifestyle choices he makes to become the most-subscribed YouTube star in the world.