Cristiano Ronaldo puts his eldest child Jnr through an intense workout at the gym as superstar dad turns ruthless personal trainer

Cristiano Ronaldo put his son Cristiano Jnr through an intense training program as the pair bonded in a heartwarming father/son moment.

The Portuguese legend continues to star in the twilight of his sensational career in Saudi Arabia with his partner Georgina Rodríguez and children.

Ronaldo is the father of five children, including Cristiano Jr. the eldest is after being conceived through a surrogate mother and four other children follow later, while another son unfortunately dies at birth.

Cristiano Jnr aspires to follow in his father’s footsteps and become a professional superstar, and was by his father’s side throughout Ronaldo’s record-breaking exploits.

The 14-year-old now plays for Al-Nassr’s academy with the club’s first-team star Ronaldo Snr and trains with his father at their private gym in a bid to continue his development.

Cristiano Ronaldo put his son Cristiano Jnr through an intense training program as the pair bonded in a heartwarming moment

Ronaldo and his 14-year-old son worked out together at the gym in Saudi Arabia

The viral video shared online shows the pair sitting together at a dining table, having breakfast and discussing what time Cristiano Jnr woke up in the morning, while the youngster went on about how he wants to go back to sleep.

The 39-year-old isn’t too keen on the idea and tells his eldest child that they are going to do a workout together, saying: ‘Muscles up, five exercises, carpet, five exercises, carpet.

‘In an hour I’m going to do the same as you. There are three two-minute series, for a total of six.

‘Do two minutes, do it at the same time. You make a belt and I’ll make another one, and we’ll do it at the same time,” he added.

The couple are then shown together in the gym, with Ronaldo encouraging his son to get started on the lateral pulldown machine as he observes.

Ronaldo’s eldest child was by his side during the biggest moments of his stunning career

Ronaldo then gets to work on the machine after his son is done and later continues training on different machines in the luxury fitness environment.

Despite his enthusiasm to get his son into shape, Ronaldo previously revealed that he is not an overbearing father and lets his children make their own choices.

“My son has potential. We’ll see if he becomes a great footballer. Sometimes he drinks coke and eats chips and that irritates me,” Ronaldo said earlier.

“I just want him to be the best at whatever he wants to do. I always tell him: hard work is the most important thing.”