United Kingdom, Aug. 12 -- Jenna Ortega used to "go all day" without eating or drinking on set as a child star.

The 23-year-old actress, who started her career in the early 2010s with appearances in the likes of Rob, Days of Our Lives and Insidious: Chapter 2 before breaking out in You, Scream and Wednesday, has revealed "one mistake" she made during her early roles.

She told Esquire magazine: "As a child, I was so grateful and so excited to be there that my game face was on.

"I wasn't asking for a sip of water. I would go all day without eating, drinking, whatever, because I wanted so badly to not be in the way of anybody.

"Maybe that was my mistake, was not actually looking after myself."

Her debut role came in sitcom Rob at the ag...