he most pint-sized yet fiercest Supreme Court justice on the bench happens to be an 83-year-old woman who works out daily. The New York Times recently reported that Ruth Bader Ginsburg owned up to a completely doable workout that keeps her in dissenting shape.

Each morning she completes 20 push-ups and 30 seconds of planks.

“I do 10, and then I breathe, and then I do 10 more,” she said.

No wonder she doesn’t feel like retiring, and includes things like whitewater rafting, horseback riding, and water skiing as favorite leisure activities.

She’s also known to be a proponent of the Royal Canadian Air Force workout, which debuted in 1961. It was originally developed for men, of course, to help their pilots get in flying shape. That plan was called 5BX (Five Basic Exercises).

Then a corresponding plan, called XBX (Ten Basic Exercises), was developed for women. Who’s surprised women got assigned twice as much work?

Regardless of gender, the idea is that the workout quickly and efficiently works out major muscle groups in a short period of time. Liken it to today’s wildly popular HIIT and interval training workouts. The Canadian workout that Ginsburg likes includes a combination of knee raises, arm circles, push-ups, sit-ups, chest raises, leg raises, running, and hopping.

The workout doesn’t require any equipment, just enough space to complete the motions. Dame Helen Mirren is a vocal fan of the regimen as well, and notes that it only takes her about 12 minutes to complete.

Notorious RBG may not need an Enell, but plenty of revolutionaries like her will want to strap into our Sport Bra before any hopping ensues!