Sheikh Hamdan bin Mohammed, Crown Prince of Dubai, was joined in the gym by football superstar Cristiano Ronaldo.
Ronaldo, 35, is in Dubai for Sunday's Dubai International Sports Conference, where he will be one of the speakers alongside other acclaimed players Robert Lewandowski and recently retired Iker Casillas.
Ronaldo is also a contender for the Globe Soccer Awards, which take place on Sunday evening. He led the fans' voting in both the Player of the Year and Player of the Century categories.
The Juventus and Portugal forward, famed for his athletic prowess as much as his goalscoring abilities, took the chance to hit the gym for a workout while in the UAE. A short clip of the footballer running on the treadmill alongside Sheikh Hamdan was uploaded to Sheikh Hamdan's Instagram account.
Ronaldo also uploaded a photo from his time in the gym to his own Instagram account. The former Manchester United and Real Madrid player is a regular visitor to Dubai and spent Christmas last year in the city, when he also was pictured with Sheikh Hamdan.
Sheikh Hamdan has often invited many of the world's top athletes to train at his gym. Ronaldo is a frequent visitor, while men's tennis No 1 Novak Djokovic and MMA superstar Khabib Nurmagomedov have also both recently trained at his facility.