Jake Paul roars as Amanda Serrano repeatedly punches his stomach ahead of Nate Diaz fight

Jake Paul recently enlisted Amanda Serrano to help work out his core.

‘The Problem Child’ shared footage of Serrano repeatedly punching him in the stomach while a crowd of people cheered on the undisputed featherweight world champion.

Paul looks unfazed as the shots progressively get harder and he can be seen drinking water and roaring on the fighter he promotes as she pounds away at his body.

The YouTuber-turned-boxer is currently gearing up for his seventh professional fight after suffering a first career defeat against Tommy Fury in February.

Paul opted against facing Tyson Fury’s brother in an immediate rematch and will instead square off against UFC legend Nate Diaz in Utah on August 5.

On the undercard, Serrano and Heather Hardy will meet for a second time.

The pair first fought in 2019 when Serrano picked up a decision win to become a world champion at featherweight and give Hardy her first taste of defeat as a professional boxer.

Since then, ‘The Real Deal’ has picked up seven victories and cemented herself as one of the best female boxers on the planet, but she did suffer a loss against Katie Taylor last year.

Serrano stepped up to challenge the undisputed lightweight champion and gave her all she could handle over ten rounds before finding herself on the wrong end of a split decision.

Meanwhile, Hardy has just fought once in the last four years.