Sarah Hyland captioned a photo of herself on Instagram stories, sharing that she’d stepped on the scale to determine her body composition.

“Yeah. My scale says I’m 48% fat. Soooo…how’s your Monday?” she captioned the photo. According to her body composition scale, she weighs 92.8 pounds, with 49% body fat, 11% muscle, 37% water, and 3% bone. LOL! Not sure about that.

Thankfully, People reached out to some medical experts to get the facts straight.

“Women tend to have more body fat than men, but it’s highly unlikely that she would be 92 pounds and almost 50% body fat,” said Samuel Klein, MD, director of the Center for Human Nutrition at the Washington University School of Medicine in St. Louis.

When assessing body fat, it’s critical to consider distribution in addition to composition, says Dr. Klein: “Measuring your waist circumference, for example, will give you a better estimate of your fat distribution than stepping on a scale.”

Read more at People.