Sean Penn looks out of breath as he endures post-holiday jog after returning from Hawaii with Charlize Theron

By Jennifer Pearson and Jessica Earnshaw

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He may have just returned from a festive break in Hawaii, but Sean Penn didn't waste any time in getting back into his workout routine.

Despite having enjoyed a number of fitness-busting surf sessions while on holiday, the actor appeared keen to have a run on Friday.

Even though he was looking a little out of breath, the 53-year-old's active lifestyle is clearly paying off after he displayed his trim physique while on the beach.

Post-holiday workout: Sean Penn was spotted out jogging in Los Angles on Friday after returning from Hawaiian break

Post-holiday workout: Sean Penn was spotted out jogging in Los Angles on Friday after returning from Hawaiian break

The Into The Wild star must have been feeling the chill as he opted for a black beanie hat as he kept a solid pace down the pavement.

 

The father-of-two was also wearing a white zip-up jacket, with black trim, a pair of dark jogging bottoms and New Balance trainers.

Sean didn't look too happy as he clenched his hands together, while rumours circulate surrounding his relationship with Charlize Theron.

Active lifestyle: The Into The Wild actor appeared to be running at quite a pace while sporting a black woolly hat

Active lifestyle: The Into The Wild actor appeared to be running at quite a pace while sporting a black woolly hat

Fit at 53: The star opted for a white zip-up jacket and black joggers
Getting stronger: Sean finished off his ensemble with a pair of New Balance trainers

Fit at 53: The star opted for a white zip-up jacket and black joggers

New pictures emerged of the pair relaxing on the beach while taking in the stunning sunset earlier this week.

The muscly actor is shown with slicked back hair and wearing a black short-sleeved wetsuit while Charlize, 38, is summery in a loosely fitting blue-print smock.

A blond-haired male companion is also sitting on the sand with them, clad in a blue wetsuit, making Charlize the stand out beauty with her blonde bob and rosy cheeks.

Speaking to the New York Daily News, an eyewitness described them as looking 'very close and comfortable together.'

On the beach: Charlize Theron and Sean Penn added fodder to the romance rumour mill when pictures of them on holiday in Hawaii emerged

On the beach: Charlize Theron and Sean Penn added fodder to the romance rumour mill when pictures of them on holiday in Hawaii emerged

The South African was spending the New Year's holiday in the tropical paradise and was said to be a guest of Sean's beachfront home.

Earlier on Monday, Charlize was spotted strolling along the shore wearing a bikini with black bottoms and a brightly coloured, striped top.

While the actress was sunbathing on the beach, Sean took off towards the ocean to go surfing.

Gorgeous view: The leggy stunner wore a blue-print smock as she gazed out to the sea where Sean spent some time surfing

Gorgeous view: The leggy stunner wore a blue-print smock as she gazed out to the sea where Sean spent some time surfing

  

Eye-catching: The 53-year-old actor was certainly attention getting as he flexed his sculpted muscles

Eye-catching: The 53-year-old actor was certainly attention getting as he flexed his sculpted muscles

On Wednesday, Charlize and Sean flew home to Los Angeles and separately made their exit through the terminal at LAX.

The next morning, on Thursday, Sean was seen leaving Charlize's Hollywood home behind the wheel of a V8 Nissan Titan truck, and following him was Charlize in a black Lexus. 

That afternoon Charlize hit the gym for a workout, staying low-key beneath a hooded navy jacket while showing off her toned legs in black leggings.

Beach babe: Charlize soaked up the sun on the beach in Hawaii on Monday
Beach babe: Charlize soaked up the sun on the beach in Hawaii on Monday

Beach babe: Charlize soaked up the sun on the beach in Hawaii on Monday

Surfing safari: Sean enjoyed his water sport while Charlize sunbathed

Surfing safari: Sean enjoyed his water sport while Charlize sunbathed

Sean was previously married to Madonna and has dated several actresses including Scarlett Johansson.

The Gangster Squad star and Charlize have known each other for years but their latest jaunt has fueled recent speculation they could be dating.

Charlize has two-year-old son Jackson – whom she adopted in 2012 - but there was no sign of him as she holidayed with Sean to ring in the New Year.

Morning after: Sean and Charlize were seen leaving her Hollywood home in separate cars on Thursday

Morning after: Sean and Charlize were seen leaving her Hollywood home in separate cars on Thursday

Low key: The blonde actress kept her down and covered by a blue hoodie as hit up the gym for a solo workout on Thursday

Low key: The blonde actress kept her down and covered by a blue hoodie as hit up the gym for a solo workout on Thursday

The dazzling blonde is said to be keen to adopt another little one this year so Jackson can have a sibling to play with, according to National Enquirer.

A source told the publication: 'Charlize admits it's a lot to go through, but she definitely wants Jackson to have a little brother.

'She's starting the process all over again right after the New Year. She wants Jackson to have a sibling who isn't four or five years younger than him - she wants to raise them together.'

Taking care of business: Sean was seen running some of his own personal errands on Thursday and still wearing his favourite leather jacket
Taking care of business: Sean was seen running some of his own personal errands on Thursday and still wearing his favourite leather jacket

Taking care of business: Sean was seen running some of his own personal errands on Thursday and still wearing his favourite leather jacket

The comments below have been moderated in advance.

He is sexyy!

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A legend in his own mind

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he looks much better than Madonna

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Argentinian supporting, Falkland hating, low-life, jumped-up American actor..... Hope his career tanks now! Actors should NOT involve themselves in other countries disputes! he is NOT UK or Argentinian so I fail to see what makes him an expert on the political situation there!

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Something very attractive about a 53 yr old man who keeps in shape. As for him being 'not very likeable' I like him!

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since when was the daily mail part of the sean penn appreciation society , given the blanket coverage of the last week

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Yeah and ugly with it...

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He is gross.

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Her hair is ridiculous

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Yes, running will do that. Nice catch.

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