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Everyone knows that strong arms are the foundation of a good relationship (right?). Perhaps that’s why Lupita Nyong’o has inexplicably been making her Black Panther costar Michael B. Jordan do push-ups in the most unlikely places.

It started at the New York Fashion Week Calvin Klein show when Nyong’o beckoned Jordan over to perform a single push-up in the middle of the post-show crowd. He delivered a perfectly executed one, but he wasn’t too happy about it: “She’s brutal. Never bet with her ever,” the Black Panther star joked.

This week, the children’s book author struck again backstage at The View when she ordered her costar to serve up another push-up.

“How many would you like? Because you’ve only got three left,” Jordan asks Nyong’o in the video she kindly shared to Instagram.

“I want to do one now, and then we’ll see about the rest,” she responds.

@michaelbjordan, losing with a smile. On call push-ups!!!

A post shared by Lupita Nyong'o (@lupitanyongo) on

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