Pippa Middletonhas the perfect gym buddy: her 11-month-old son,Arthur!

Pippa, 36, explained that in addition to free play, there are classes with “structured activities that help promote movement, balance and strength.”

“Arthur burns lots of energy in this safe environment and learns many physical skills,” the mother of one said. “I have also noticed him building his confidence with each visit.”

Pippa Middleton.Karwai Tang/Getty

Pippa Middleton

Pippa previously revealed that at 6 months old,Arthur was already loving the water(after sharing howswimming helped her stay fit during pregnancy).

“Starting my son Arthur swimming at four months old has given him confidence and enjoyment in water,” she wrote. “He’s now six months old, and swimming is one of our favorite activities. The exercise helps guarantee sound daytime sleeps, and the movement has improved his digestion.”

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Kate Middleton, Meghan Markle and Pippa Middleton.Karwai Tang/Getty

Catherine, Duchess of Cambridge, Martina Navratilova, Meghan, Duchess of Sussex and Pippa Middleton in the Royal Box on Centre Court during day twelve of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club on July 13, 2019 in London, England.

Asource previously told PEOPLEthat Pippa and her husband, James Matthews, are looking forward to settling down and “having children and leading a quiet life.”

source: people.com