Just when you thought it couldn't get any better, Dwayne "The Rock" Johnson has provided another update on his physique, and it's insane.

The WWE legend took to his Instagram page to share with his 191 million followers a picture of himself in the gym.

Since his rise through Hollywood, it's difficult to think of a more recognisable figure on the acting scene, and despite his movie commitments and busy schedule, Johnson continues to find himself enough time in the day to stay in unbelievable shape.

His latest post reveals his mind-blowing leg muscles against a backdrop of an incredibly well kitted-out gym.

The Rock captioned the post: "Barefoot and bone tired - must be leg day.

"Bow down to the grind.

"If you know, you know - ISYMFS." 

With an estimated net worth of nearly £200 million, it's a testament to Johnson's will and determination that he's able to motivate himself to be in the best shape of his life, every day.

Finding time in the day to maintain such a physique isn't easy, which is why, as revealed by SunSport, the former WWE champion sleeps for just four hours a night.

It's said that he goes to sleep at midnight and wakes up at 4am for a bright, or sometimes dark, and early start to the day. 

Seemingly endlessly generous, Johnson is also more than happy to share even his workout time with others, as he recently welcomed two special guests to his private gym for an exclusive session.

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The two guests, Olympic gold medal winning skier Lindsey Vonn and her soon-to-be-husband, New Jersey Devils ice hockey player P.K. Subban, spent some time with The Rock on Monday.

Vonn uploaded a clip of the session to her own Instagram, captioning it: "Name a better workout partner... I'll wait."

Something tells us she'll be waiting for a long time.