but the key to developing a positive body image is to recognize and respect our natural shape and learn to overpower those negative thoughts and feelings with positive and accepting ones.

Unrealistic body images can foster negative self-assessment, causing people to strive for “perfection,” the Mental Health Foundation says. This can lead to eating and mood disorders.

Trainor praises her husband, Spy Kids actor Daryl Sabara, 30, who she says is great at removing those thoughts and reminding her she is healthy and strong. "Body image is always there, but I'm ...