While we know what brand Kate Middleton loves to wear to the gym (spoiler: Lululemon), we’re pretty much in the dark when it comes to her fitness regime. Sure, she says she stays fit by chasing little George and Charlotte around, but c’mon. There are surely some workouts going on at Kensington Palace. If you’ve been anxiously waiting for her to spill her secret, it looks like Kate has finally revealed her workout of choice: boxing.

The princess was spotted at the Heads Together launch event yesterday in London, where she slipped on a pair of gloves and got right into it with an instructor. The moment — in all its Muhammad Ali glory — was shared on the Royal family’s Instagram account.

Although we know how much she loves her Lulu leggings, it looks as though she decided to box this one out in her blouse and patterned skirt (which is from Banana Republic, BTW). Kate, this moment just serves as proof that you’ll forever be our lifestyle guru.

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(Photo via Brendon Thorne/Getty)