Patriot Pics / BACKGRID

A shirtless Rob Gronkowski and his girlfriend Camille Kostek take-over a park in Boston to lead an outdoor class for Gronk Fitness.

The former New England Patriots player looked in tip-top shape as he led the HIIT class which had him and his SI model girlfriend doing intense exercises in the outdoor park.

He showed off his sculpted abs in red shorts and Nike sneakers as he taught everyone how to exercise Gronk style by going pedal to the metal on the treadmill.

Camille showed off her impressive stamina as she kept up with the former professional athlete doing push-ups, crunches, lunges, jump rope, and running on the treadmill.

She shared a video of their ‘Sunday Funday’ workout giving the highlights of the day with Rob and herself as they led the class.

Rob Gronkowski – Shirtless & Partying His Face off during Patriots Parade

The ultra-fit couple shared their message about Gronk Nation, saying — ‘community and health and getting your mind right is what this is all about’.

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Looks like @gronk is ready for Football Sunday!

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As hard as the class was, there was also time for fun, as Gronk and Camille danced to Backstreet Boys Everybody and got down real low — where do we sign up?

Rob Gronkowski and Camille Kostek – Sweltering Hot in Cabo!