Chris Hemsworth shows off his bulging biceps in a singlet as he trains with Arnold Schwarzenegger

Hollywood star Chris Hemsworth is in the best shape of his life.

And on Saturday, the  39-year-old showed off his bulging biceps as he completed a training session with actor Arnold Schwarzenegger, 75.

In the image shared to Instagram, Chris showed off his huge arms in a white singlet as he posed alongside The Terminator star.

The Thor actor was all smiles as he wrapped his arm around Arnold, who gave a joyful thumbs up.

‘Ya never know who you’ll bump into at the gym! What a dream to train with the one and only,’ Chris captioned the image.

The A-lister stays in phenomenal shape by sticking to a strict workout regime and maintaining a high-calorie diet. 

Chris is currently in New York for the premiere of Extraction 2. 

Last week, the actor clarified comments he made last year about taking a break from acting after discovering he is predisposed to Alzheimer’s.

Chris was filming his Disney+ docuseries Limitless when he found out he is ‘between eight and 10 times’ likelier to develop Alzheimer’s than the general population. 

The actor said his announcement he was taking a step back from Hollywood ‘was blown out of proportion’. 

The A-lister stays in phenomenal shape by sticking to a strict workout regime and maintaining a high-calorie diet

Explaining the real reason he has decided to slimline the projects he takes on, Chris told ET:  ‘I wanted to take off because I’ve been working for 10 years, and I’ve got three kids that I want to spend more time with.

‘I’ve been running from project to project for a long time, just to avoid being unemployed or that fear that it’s the last job you’ll get, you know?

‘I want to be more curated about the choices I make, things I immerse myself in or I’m involved in. I want to have greater value and work with great people.’

Chris currently has four projects in the works – including an upcoming Avengers sequel where he returns as his character Thor, and an untitled biopic about wrestling icon Hulk Hogan.

Last week, the actor clarified comments he made last year about taking a break from acting after discovering he is predisposed to Alzheimer’s