Supreme Court Justice Ruth Bader Ginsburg’s trainer is releasing a “fun, fully illustrated exercise book” on the octogenarian’s workout routine.

Bryant Johnson is Ginsburg’s trainer, and the 84-year-old justice has described him as the most important person in her life. Johnson has written “The RBG Workout: How She Stays Strong … and You Can Too!” The book is due out Oct. 17, shortly after the start of the Supreme Court’s coming term.

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