Bethlehem businesswoman Stacey Redfield hosted a book signing for her new book, “The Pilates Effect; Heroes Behind the Revolution,” at the Moravian Book Store Saturday afternoon on Main Street. Redfield co-wrote the book with Sarah Holmes.

“The Pilates Effect,” the authors say, “reveals the hidden history of Pilates. From humble beginnings, Joseph Pilates founded the groundbreaking regimen in New York City and worked closely with his partner Clara to rehabilitate and renew dancers who had been injured or were aging.”

Redfield owns Physical Methods, a Pilates studio in Bethlehem at 653 E. Broad St.

Redfield is also an actress, model, and spokesperson.