Cristiano Ronaldo shows off insane six-pack aged 38 as he and son Cristiano Jr relax in sauna

CRISTIANO RONALDO showed off his insane six-pack as he and son Cristiano Jr relaxed in a sauna.

The 38-year-old was in action for new club Al-Nassr in Mecca on Thursday night for their Saudi Pro League match with Al-Wehda at the King Abdulaziz Sports City Stadium.

The Portugal international scored all four goals in his side's 4-0 triumph to take his league career tally to 503.

The global superstar reflected on the momentous achievement on Instagram afterwards, writing: "Great feeling to have scored 4 goals and reaching my 500th league goal in a very solid win by the team!"

That was his fifth goal for Al-Nassr since arriving in the Middle East following his controversial exit from Manchester United.

Ronaldo and his Al-Nassr team-mates will be back in action a week on Friday, welcoming Al-Taawoun to the King Saud University Stadium.

And he appears to be making the most of one of his days off by enjoying some father and son time with his boy.

The forward posted a snap of the pair sweating it out in a sauna accompanied by two fire emojis.

And his legendary six-pack was on full display for his 546 million followers.

Meanwhile, Cristiano Jr appears to have followed in his father’s footsteps by lining up for a team in Saudi Arabia.

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Ronaldo’s partner Georgina Rodriguez shared a shot of herself sitting in the stands watching a kids' game on her Instagram story.

And she captioned it with: “Mami day.”

Georgina previously posted a picture of the 12-year-old in action for his new team last month.