Demi Moore remembers “crazy” things she did to lose weight

• Demi Moore reveals she cycled 60 miles every day to lose weight after her second pregnancy
• The actress admits that she used to put too much pressure on herself, but has now learned to deal with her body image
• The topics of body image and “self-judgment” are examined in her new film The substance

Demi Moore reflects on her former negative body image and talks about some unhealthy habits that helped her lose weight.

The 61-year-old actress appeared on September 22 in a segment of CBS Sunday Morning and talked about the “crazy” things she did to her body to conform to beauty standards at the time.

“I put so much pressure on myself,” she told host Tracy Smith. “And I experienced being told to lose weight and all that. Even though it may have been embarrassing and humiliating, I was doing that to myself.”

Moore announced that she started shooting An immoral offer shortly after the birth of her daughter Scout Willis in 1991. To lose the pregnancy weight, she cycled about 60 miles to work and back home every day.

“I find [Scout] was about five or six months old when we were shooting,” she explained. “I fed her all night, got up in the dark on a trainer with a headlamp, rode my bike all the way to Paramount, even to our location, then shot a full day, which is normally a 12-hour day, and then started all over again.”

Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories.

“Just thinking about what I did to my body is so crazy, so ridiculous,” she continued. “But when you look back, you ask yourself, 'Was it really that important?' Probably not, but at the time, it was everything to me.”

Moore added that her self-image is “shaky” today, but that she is in a much better place mentally.

“Some days I look and think, 'Wow, that's pretty good,' and other days I catch myself over-analyzing things and hyper-focusing on things I don't like,” she said. “The difference is now I can catch myself. I can say, 'Yup, I don't like this saggy skin, but you know, it is what it is. So I'm going to make the best of what is instead of chasing what isn't.'”

Earlier this month in an interview with The GuardianMoore spoke openly about body image and the “self-judgment” explored in her new film The substance.

The actress addressed expectations of the female body in the '90s, saying that women were only considered attractive if they were thin back then. “What I did to myself,” she told the outlet. “What I made of it for myself. When you really look at that violence, how violent we can be to ourselves, how brutal.”

The PEOPLE Puzzler crossword puzzle is here! How fast can you solve it? Play now!

“Self-judgment, striving for perfection, trying to rid ourselves of 'flaws,' but also feelings of rejection and despair – none of these are exclusive to women,” Moore continued, then pointed to a scene in the film in which her character Elisabeth Sparkle looks for her flaws in the mirror before a date.

“We all have moments where we go back and try to fix something and only make it worse to the point where we can't move on,” she explained. “We see these little things that no one else sees, but we're so hyper-focused on everything we don't see. If we start thinking that our worth is based solely on how we look, we're all going to end up devastated.”

Moore then went on to say that “we live in a time of great judgment” in which “people can judge each other anonymously and cruelly.”

“I feel [this kind of judgment] is a reflection of one's own dissatisfaction and/or a way to boost one's self-esteem,” she said at the time. “When something like that happens, I've learned to just let it go. It's about what it means to me. If I give it a lot of weight, value and power, it will have that meaning. If I don't, it won't.”

The substance follows Moore's character Elisabeth, who tries a black market drug to create a younger version of herself. Directed by Coralie Fargeat – and also starring Margaret Qualley – the film tackles issues such as body image and societal expectations of women and aging. It won the award for best screenplay at the Cannes Film Festival in May.