Cristiano Ronaldo's adorable workout with 4-year-old son [video]

The Real Madrid front man Cristiano Ronaldo tweeted a picture with a video link: "I think I found the perfect training partner!"

Cristiano Ronaldo's 4-year-old son is already taking after his father - working on his abs during a father/son training session.

The Portuguese superstar was enjoying some downtime with his family following the disappointing loss to Juventus on Wednesday.

The pair was filmed doing sit-ups together, with the Portuguese superstar going through his paces first.

Then the tables turned - Ronaldo then said: "I've done mine, so now it is your turn. Just ten."

Ronaldo junior then went through his work-out while the former Manchester United man counted him through.

Watch video here: