Six strangers staged an intervention for a fellow gym member battling anorexia — saving her life.

Arkansas native Lauryn Lax weighed just 79 pounds when her gym-mates intervened.

“I remember waking up that day at 4 a.m. and stepping on the scale as I did every morning and seeing the number 79 — a number I had not seen since I was 10,” Lax told Barcroft Media.

Later that day, the half-dozen women approached the 27-year-old at the gym — telling her they feared for her life.

It worked. Lax agreed to go to the hospital, where she was forced to check into the intensive care unit for three weeks after she had an abnormally low heart rate.

“The doctor came to me and said, ‘You can stay another six to eight weeks in bed with a feeding tube or you could go into a residential treatment center to get to the bottom of your illness,’” she said.

That was four years ago.

Since then, she’s moved to Texas and been through treatment, and now works with other women who suffer from eating disorders with a program she developed.

“My five-year goal is to open up a holistic healing center in Austin, but for now, I would like to reach more girls and women who desire freedom from their disorders,” she told Barcroft.