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Any mom who’s given birth knows losing the baby weight is easier said than done.

But in an empowering Instagram post, Pink is encouraging new moms to avoid obsessing over that number on the scale and embrace their bodies as they are.

“Would you believe I'm 160 pounds and 5'3"?” Pink, who gave birth to her second child, Jameson Moon Hart, in December, wrote in the Instagram post on Saturday. “By 'regular standards' that makes me obese. I know I'm not at my goal or anywhere near it after Baby 2 but dammit I don't feel obese.”

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Thirty-seven-year-old Pink, who’s known as much for her impressive pipes as for her aerial dance performances, brings up an interesting point about popular definitions of obesity.

Body Mass Index (BMI) is a measurement of body fat calculated by body weight and height, and someone with a BMI between 25 and 29.9 is considered overweight. (Pink’s BMI would be 28.3, based on her noted height and weight.) However, some scientists have criticized the use of BMI as an outdated predictor of health, as it ignores waist size, and does not take bone and muscle mass into account, among other factors. NPR reported that the BMI was developed in the early 19th century.

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According to the Centers for Disease Control and Prevention, about two-thirds of American adults are overweight, and more than one-third of American adults are obese.

But for women who have recently given birth, a number of factors can contribute to not being able to return to a normal weight. With her Instagram, Pink aims to shut down the body shaming in favor of self-love.

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She ended the post with an inspiring message to other mamas: "The only thing I'm feeling is myself. Stay off that scale ladies!"

As of Tuesday afternoon, the post had garnered nearly 246,000 likes and over 8,000 comments.