By Gabrielle Olya
Updated November 04, 2016 03:53 PM
Christopher Peterson/Splash News

Kate Upton works hard for her toned physique — but her latest workout actually requires zero effort.

“I invented a new workout,” the model, 24, says in a video she posted to Instagram on Thursday. “It’s called sitting on your ass. Everyone’s doing it.”

The camera then pans to her trainer Ben Bruno, and her dog and regular workout companion, who is happily sitting nearby.

Upton may joke about taking it easy at the gym, but she usually works out five to six days a week for at least an hour each time.

“One of they key tenets of my program is progressive overload,” Bruno previously told PEOPLE. “We do slow increases over time, so you build gradually. It’s important to always strive to be better, whether that’s with more weights or reps or moving to a harder exercise. With Kate we do all three at different points, so we’ve gradually built up.”

Upton can deadlift over 200 lbs., do sled pushes with 500 lbs., and do bear crawls with 300 lbs.

WATCH: Kate Upton’s Trainer Shares the Workout and Diet That’s Led to Her Incredible Body Transformation

“She’s insanely strong,” said Bruno. “Stronger than a lot of athletes I train!”