Cristiano Ronaldo sported a black toenail while posing with his eldest son, Cristiano Jr

Cristiano Ronaldo was spotted with a black toenail again – but there’s a reason why.

Ronaldo took to social media to share a photo of himself standing with his eldest son Cristiano Jr, in which they proudly showed off their matching ripped physiques.

The 40-year-old superstar sported a bare-bodied look alongside his son, who will turn 15 tomorrow, and posted the picture on Instagram to his 657million followers.

Celebrating Father’s Day in style, they appeared to have worked out together in a state-of-the-art gym. Indeed, Ronaldo captioned the post: ‘Like father, like son’.

Clad in red shorts, Ronaldo tensed for the camera, revealing he remains shredded even in the twilight of his career, while his son, wearing blue shorts, followed suit.

However, the recent photo caught some eagle-eyed followers by surprise.

Cristiano Ronaldo sported a black toenail while posing with his eldest son, Cristiano Jr

Cristiano Ronaldo sported a black toenail while posing with his eldest son, Cristiano Jr

He was also spotted with black toenails on both feet while relaxing in a sauna in 2023

He was also spotted with black toenails on both feet while relaxing in a sauna in 2023

His big toe was painted black during this snap with MMA fighter Francis Ngannou

His big toe was painted black during this snap with MMA fighter Francis Ngannou

That is because Ronaldo, who regularly shares pictures where he is seen enjoying his downtime between matches, was seen sporting a jet black toenail on his left foot.

But there is a method behind the madness – with MMA fighters also following suit.

According to a source via German publication Bild, athletes paint their nails or cover them with a protective layer to protect them from fungi and bacteria.

The source said: ‘Many top athletes do this to protect their nails from fungi and bacteria when they are stuck in sweaty shoes for hours. Even Mike Tyson.’

This is not the first time that he has been pictured with his toe nails painted black.

Ronaldo posted a picture of himself in a sauna in April 2023 as he recovered from his Al-Nassr exertions.

Typically, the photo showed off his incredible physique as he sat with his hands grasped and looked thoughtful in the image shared on Instagram.

In January 2023, MMA fighter Francis Ngannou posted a picture with Ronaldo. Again, the Portuguese forward’s painted nails were visible for all to see.

The look is another sign of a player who has always looked to go the extra mile.

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