Teenager Keeley Thomas completed 50 squats a day in February to raise money for Home-Start Royston, Buntingford and South Cambs.
Keeley, who has Down's Syndrome, raised £300 - just a few months after raising more than £1,000 with her fourth haircut for the charity.
In aid of World Down's Syndrome Awareness Day on Thursday, March 21, Keeley is selling badges at £1.
You can donate to Keeley at https://www.justgiving.com/page/keeleys-badges-1708944015688.
The money raised will go towards Project 21 Cambridgeshire - a dance group for adults and children with Down's Syndrome which Keeley attends - for their minibus fund.
Tracey Aggett from Home-Start said: "We are so proud of you Keeley, you really are a superstar!
"We are delighted that £300 has been raised."
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